Breakups

Hip-hop producer Mally Mall must be bored with love triangles -- the "Love & Hip Hop: Hollywood" star is breaking up with Nikki Mudarris again, but this time THREE other chicks are involved.

Mall and Nikki are known to be on-again/off-again (a recurring theme from Season 1) and their relationship status was set to OFF after a blowup over a Las Vegas fight weekend party.

According to our sources, the couple was supposed to host a Mayweather/Pacquiao party at a rented house in town, but Mally showed up with three chicks that weren't Nikki ... and she didn't show up at all.

Season 2 is just writing itself.

Katharine McPhee's estranged husband gave her a hand Tuesday ... a very gentle hand.

It's a stark contrast to her split with Nick Cokas, which allegedly came after Katharine was photographed sucking face with her "Smash" director Michael Morris. Katharine claimed in the documents she was already separated from Nick, but he says they were still together.

But things change ... or do they? A source close to Katharine insists Katharine and Nick had a friendly business breakfast in West Hollywood. He's still involved in her music stuff.

Selena Gomez must be exhausted ... 'cause the chick was running all through Justin Bieber's mind during Monday night's Met Gala -- at least that's how JB made it seem on the way out.

Justin and Selena have been broken up for months, but as he left the ball -- which Selena also attended -- Biebs went out of his way to throw out a line that was loaded down with bait for his ex-gf.

Watch ... he absolutely, almost desperately, wanted to make a point about SG's dress last night.

Word on the street is she just broke up with Zedd, so uhh ... never say never?

Then again ... Justin didn't seem to be losing sleep over her while partying with Leo DiCaprio at Rihanna's after-party. #TurnUp

Call it kismet, or karma, or whatever ... there's a chance Rachel Uchitel and Tiger Woods will go another round.

Rachel tells us she just broke up with baseball star Bret Boone, days after Tiger called it quits with Lindsey Vonn.

So the question ... does Mistress #1 still have a hankerin' for the golfer with a roving eye?

Sources close to Rachel say she told them, "We both loved each other very much," but adding, "It was humiliating and devastating to have to break up that way."

Now the opening ... Rachel says, "He would have to do some major apologizing to get back in my good graces, that's for sure."

No word from Tiger, but remember, when he was banging Rachel he was at the top of his game.

Sofia Vergara is ripping her ex-fiance Nick Loeb ... reminding him he had TWO chances to change the terms of their frozen embryo contract -- and didn't -- so he's got no one to blame but himself.

Sofia went on "The Howard Stern Show" Monday morning and laid out her position on the legal battle with Loeb ... explaining why she thinks the embryos should NOT be brought to term:

-- A baby needs loving parents who get along, and at this point Nick clearly "hates" her

-- Nick knew exactly what the fertility clinic's contract said about his rights

-- He signed that contract TWICE

Chalk up another loss for Tiger Woods ... this time, it's his girlfriend -- 'cause Lindsey Vonn just announced the couple has officially broken up.

The world champion skier broke the news on Facebook ... saying, "After nearly three years together, Tiger and I have mutually decided to end our relationship."

"I will always cherish the memories that we've created together. Unfortunately, we both lead incredibly hectic lives that force us to spend a majority of our time apart."

"I will always admire and respect Tiger. He and his beautiful family will always hold a special place in my heart."

Probably for the best ... since she just went on "Late Night with Seth Meyers" and admitted she hates golf.

Blac Chyna says Tyga didn't just text her out of the blue this week trying to get back with her ... she says he's been making that play for 7 months.

Sources connected with Blac Chyna tell TMZ ... the text -- in which he said "I want to be with u" -- was the last in a flurry of texts, conversations and private face-to-face meetings in which he made his play to reconcile their relationship.

Sources close to Chyna says she never believed he was physically with Kylie Jenner -- partly because she's 17, and partly because they were all neighbors and close to the Kardashian family. She says she believed Tyga when he called out the media for suggesting he was dating Kylie, but doesn't believe it anymore.

Blac Chyna posted Tyga's texts out of anger, but she claims she wants nothing to do with him anymore. It's complicated by the fact that they have a kid together.

As for Tyga, he has never said he's with Kylie and in the past has denied it ... but he's recently insinuated it, and even put it in writing.

When it comes to Tyga's women ... there's only one on his arm -- in permanent ink -- and her name is Kylie Jenner ... NOT Blac Chyna.

A photo surfaced today of Tyga with a fan, but more importantly ... he's flaunting fresh ink -- his 17-year-old GF's name is now on his inner right elbow. Sources close to the rapper tell TMZ ... he got the tat yesterday to prove to Kylie he is fully committed to her and no one else.

It's no coincidence he got the ink the day after his baby mama, Blac Chyna put him on Insta-blast -- posting his texts to her saying, "I want to be with u" ... and have a relationship.

If the texts were real ... it looks like Tyga's had a quick change of heart.

Of course, getting someone's name tatted is also known as the absolute kiss of death -- at least according to Eva Longoria, Iggy Azalea, Melanie Griffith, Ciara, etc ...

More progress in what was one of the most bitter breakups EVER -- with ex-NBA star Daniel "Booby" Gibson saying he still loves his estranged R&B star wife Keyshia Cole.

Don't forget, these two went to WAR with each other -- trading nasty insults in public ... until they hashed out a truce in the last few weeks.

And good news -- seems like things are still POSITIVE ... with Gibson telling TMZ Sports he'll ALWAYS love Keyshia ... and is dedicated to being a good father to their son.

There's more ... Gibson also praises Cole's parenting skills, which again, is huge progress.

Miley Cyrus' mouth is open for business and she put it to good use Thursday night ... locking lips with anyone she could get her hands on.

Miley was out at a party in Los Angeles where she sucked face with supermodel Frankie Rayder and fashion photographer Mert Alas. Even Cara Delevingne got in on the action with a quick snuggle.

Didn't take long for Miley to slip back into single life -- as we told you, she and Patrick Schwarzenegger broke up earlier this week.

Miley's mouth is making up for lost time.

Ariana Grande has a big problem with boyfriends screaming from the mountaintops that she has a priceless p***y ... which is why she says she called it quits with Big Sean.

Sources connected with Ariana tell us ... the last straw was when Sean dropped his track, "Stay Down," in which he raps:

I ain't even gonna lie, I got a million dollar chick
With a billion dollar p****y
Every time I c*m, I swear to God I feel like I be rich

We're told Ariana felt humiliated because Sean was treating her like a piece of meat. Ariana's grandmother came to her and asked about the lyrics, which was especially embarrassing.

But there was plenty of tension leading up to the song. Sean claims she made him pay for all sorts of extravagances. But our Ariana sources say SHE is the one who foot most of the bills, including vacations and private flights.

As we reported, Sean complained that Ariana didn't show up for his big House of Blues performance in February because she selfishly cared more about her Grammy's performance the following day.

But our Ariana sources say it was Sean who was self-absorbed. Ariana's Grammy performance was live and during the day on Saturday when she rehearsed her voice was strained and her vocal coach ordered her not to even speak for the rest of the day, and Sean got pissed.

As for Sean saying Ariana set up the Bieber stage grab to humiliate her, Ariana says it's total B.S. ... they were already broken up and she did NOT ask Bieber to engage in a stunt. And she says Sean never even brought it up.

We expected Tyga to go on a profanity-laced tirade after his ex, Blac Chyna put his texts to her on Instagram for the world to see -- but instead he's taking a low-key approach ... at least for now.

Blac Chyna posting the texts was her going nuclear in her war with Kylie Jenner -- but Tyga is clearly a casualty too. In the messages, Tyga (who is apparently "Kings Father" in BC's phone) begs, "Can I just come for a lil. Just us 3. Do something or spend a lil time."

The direct shot at Kylie comes when he allegedly tells BC he wants "to be a family again" -- and adds, "Want to start this friendship. Relationship."

Tyga responded early Friday morning, writing, "Focus on what's real in life. And surround yourself with people that you really care about.its simple."

Not sure how long cooler heads will prevail in this mess.

Ariana Grande lashed out at Big Sean almost immediately after their breakup by staging Justin Bieber's come-from-behind stage embrace ... so claim sources close to the couple.

Sources closely connected with them tell TMZ ... Sean claims it was him who broke off the relationship because she was "immature."

Sources say the downfall of their relationship started in February, when he made the most important appearance of his career at the House of Blues in West Hollywood. Everyone showed -- Kanye, Bieber, JLo, Chris Brown, Jay Z, A$AP Rocky, Tyga, Kylie and Kendall -- everyone EXCEPT ARIANA. We're told she needed to get ready for the Grammy's the next day, which he found extremely selfish.

Sean also traveled to see her "10 times more" than she went to see him. He claimed once she demanded that he blow tens of thousands of dollars to take a private jet to see her. Sean, who grew up poor, felt she was a spendthrift ... a sign of immaturity.

But the crowning blow was just after the breakup. They were still talking and the door was slightly open for a reconciliation, when Bieber jumped onstage in L.A. and grabbed Ariana from behind. Even though Ariana pushed Biebs away, Sean believes it was all calculated -- NOT by Bieber but Ariana -- to hurt him.

Brace yourself, Chris Brown ... the chick previously best known as your ex-gf just upgraded her title to ... Karrueche Tran -- star of a hit Emmy nominated show.

Karrueche's budding acting career just got a boost when her most recent gig for "The Bay" -- an online soap opera -- got nominated for a Daytime Emmy for Outstanding New Approaches Drama Series.

KT joined the cast last year ... taking over the role of Vivian Johnson -- who mysteriously returns to her hometown. She beat out 100 other actresses for the role, and so far has only appeared in 6 episodes -- but we're told she's getting a beefy story line for Season 4.

So, while Chris is off playing daddy ... Karrueche's working on getting her own 4 pound baby -- dipped in gold.

Nick Loeb says there are 2 unborn girls he wants to father ... and he's not asking the mother, Sofia Vergara, for anything other than cooperation in allowing them to be born.

Loeb's lawyer says, "Nick is not seeking to impose any parental obligations on the egg donor, financial or otherwise, and believes that the sanctity of life, his interest in achieving parenthood, and his desire to bring his daughters to term outweighs any interest the egg donor may have in destroying the embryos."

As TMZ reported, Nick is suing Sofia, claiming she wants to destroy the embryos now that she's moved on. Sofia says she will not destroy the embryos, but as we reported she refuses to allow them to come to term. We're told Sofia does not want to stir up a hornet's nest with her right-to-life fan base.

Nick's lawyer goes on ... "I created these two female embryos with the purpose of taking them to term and not destruction, because I have always dreamed of being a father."

He says he wants no money from Sofia ... Nick is loaded. He adds he's willing to give her an opportunity to be involved in the children's lives.

Miley Cyrus and Patrick Schwarzenegger have split ... the only issue is whether it's temporary or permanent.

Multiple reports are confirming the obvious ... after dating for five months, they're each off on their own again.

It looked like Miley had shaken off Patrick's partying in Cabo during Spring break from USC, but it was only temporary.

He was at Coachella alone and she's been doing her thing at various events over the last week or so.

It seems pretty amicable, but remember ... just a month ago they were out at The Palm restaurant with Maria Shriver and had even talked about getting hitched.

There's another possibility for the breakup ... Miley's appearance at the Rock and Roll Hall of Fame ceremony over the weekend. Raise your hands if you agree.