PDA

Katy Perry and Justin Trudeau sent tongues wagging with that dinner sighting last night ... but according to the chef who served them, the pair seemed to be just kicking it as pals!

Danny Smiles, co-owner and co-executive chef of Montreal's Le Violon, spilled to TMZ that despite looking good together, there was no PDA and he didn’t get any dating vibes from Katy and Justin ... just two friends enjoying a meal.

Danny tells us they went for the chef’s tasting menu, which means he served up a feast -- lobster, tuna, lamb gnocchi, beef tartare -- all served up with classic Montreal flair.

Nathan Fillion hit pause on set life ... and hit play on a real-life love story at The Happiest Place on Earth -- Disneyland!

The actor was spotted packing on the PDA with actress Tania Raymonde -- sneaking in smooches and looking very head over heels as they strolled through the California theme park.

It wasn’t just the kissing -- the 54-year-old and 37-year-old were glued at the hip, strolling arm-in-arm and fully leaning into that honeymoon-phase magic. Mickey and Minnie could never.

Irina Shayk's kissing a new dude in a picturesque Italian courtyard ... making out with Michele Morrone on Saturday -- but, it's all just for show!

The model was spotted sucking face with the Italian actor and singer in Napoli ... engaging in some intense PDA while filming a new ad for Dolce & Gabbana.

Check out the clip ... it starts out hot and heavy -- but, ends abruptly when someone seems to call cut from behind the camera.

Jessica Alba is locked in with a kiss -- literally -- to her new beau Danny Ramirez!

Check out the pics of the actress and her new flame passionately smooching each other outside his house in Los Angeles Friday. They look like a couple of teenagers freshly in love ... holding on to each other and sneaking in one more kiss before they part ways.

The pair even matched in baggy gray sweats and black tops, plus dark-colored baseball caps. How cute!

Hailey Bieber and Justin Bieber were all over each other Friday night as they shared a passionate smooch during an album listening party for "Swag."

Check out the pic ... they're shutting down any remaining chatter that their marriage is on the rocks by packing on the PDA at the party, which took place at Los Angeles' Bird Streets Club.

The pair couldn't keep their hands off each other -- they're seen cuddling up to each other in additional snaps from their fun night out ... with shirtless JB showing everyone what's his as he wrapped his arms around the model's waist and pulled her in tight.

Half of Camila Cabello's heart has left Havana for Ibiza ... 'cause she just had a wet 'n wild make-out sesh with her beau Henry Junior Chalhoub while visiting the Spanish island!

Check out the fun and flirty pics ... the "I LUV IT" singer and the billionaire heir couldn't keep their hands off each other as they passionately locked lips while taking a dip off the coast of Ibiza.

At one point, the lovebirds moved their PDA to a tiny dock, where Camila climbed on top of her bae and continued smooching him as he wrapped his hands around her waist.

Astronomer CEO Andy Byron and HR Chief Kristin Cabot were all over each other even when they weren't on the kiss-cam ... 'cause we got them locking lips before they got busted.

Check out the video ... shot from behind their seats. You see the massive stadium and the crowd holding up lighted phones as Chris Martin belts out Coldplay's hit, "Yellow."

The pair is silhouetted by the brightly-lit stage ... as they sway to the music. At times, they had their arms around each other, and you see Andy going in for a kiss.

Reese Witherspoon's sailing the French Riviera this summer on a luxury yacht with her boyfriend Oliver Haarmann ... and if that doesn't sound romantic enough, check out these photos of Reese and Oliver smooching like there's no tomorrow.

The actress and her financier boyfriend packed on the PDA Sunday in Saint-Tropez ... locking lips and getting handsy on the stern of their big fancy boat.

Reese and Oliver kissed, hugged, laughed and embraced as they sat with their feet dangling in the water ... then they took their love fest overboard.

Trinity Rodman and Ben Shelton are certainly making the most of their summer ... 'cause the soccer star shared a recap from a recent getaway -- and they couldn't keep their hands off each other!!

Rodman -- daughter of NBA Hall of Famer Dennis Rodman -- gave her Instagram followers a glimpse into her romantic trip with her tennis star bae on Monday ... sharing several pics and videos of their summer together.

One of the photos shows them locking lips right in front of the water ... with the NWSL forward showing off her physique in a green bikini.

Jennifer Aniston heating up those summer romance rumors with Jim Curtis ... 'cause he gave her a streamy massage while on a yacht trip!

The actress and the hypnotist were spotted together on a yacht off the coast of Mallorca ... wearing matching black shirts -- Jenn in a tank top and Jim in a collared number.

Jenn must've had a knot in her neck, 'cause Curtis puts his hands on her and starts rubbing away ... a move that could just be friendly -- though it seems to indicate there's more going on between the two of them.

Alessandra Ambrosio and her man Buck Palmer are all over each other on their European vacay ... and, Buck's body is just about the only thing covering Alessandra's.

The model and her dude were in Ibiza on Friday ... taking a dip at Casa Jondal -- a top-tier resort on the island good enough for this supermodel and her jewelry designer better half.

AA put on a cheeky display ... going with a thong-style bikini -- while Buck showed off his strong chest and held Alessandra's hand.

Sophie Turner’s feeling the love and spilling the tea -- all over her bloke Peregrine Pearson back in her native UK ... and yeah, the PDA was piping hot!

Catch these snaps -- The "Game of Thrones" star was having a full-on snog sesh in London Thursday, looking proper loved-up with Peregrine before the pair strolled through Notting Hill like they were Hugh Grant and Julia Roberts.

Sophie kept it breezy in a laid-back look, while Peregrine played it just as cool -- both donning shades like true pros braving the great British scorcher (AKA anything above 70°).

Justin and Hailey Bieber are enjoying some of their recent windfall ... because they're on vacation on a Spanish isle ... and they look super happy.

The parents snuck off Tuesday for a date night in Mallorca, enjoying dinner and a sunset along the water ... and there was plenty of PDA.

Justin and Hailey held hands as they walked into a restaurant ... and after their meal, they plopped down on a patch of coastline and Hailey started rubbing Justin's back. A tender moment, for sure.

Rachel Zegler has found her Prince Charming -- the "Snow White" star was packing on the PDA with Nathan Louis-Fernand, and he’s no stranger to the spotlight ... or a well-timed shirt drop!

Catch the clip -- Rachel melted into the British actor/dancer's arms at the London BST Hyde Park Festival Sunday, giving him the ultimate puppy dog eyes ... basically begging for that kiss. And yep, he delivered.

Rachel seemed to know other folks in the crowd, but her eyes (and arms) stayed locked on her man -- who, LBR, was giving full smooth operator vibes, probably coming in handy during his "Magic Mike Live" days of grinding onstage for a living.😉

But RN, Nathan’s been backing Rachel up in the West End adaptation of "Evita" -- literally -- as a dancer in the London shows, so we’re guessing that’s where the sparks started flying!

Fireworks were flying between President Donald Trump and First Lady Melania as they celebrated America's Independence Day Friday ... and their lovefest -- followed by some hilarious dance moves -- are forever cemented on video.

Watch the PDA-filled clip -- the pair seems smitten as they cozy up on the balcony of the White House to honor the 4th of July. Donald pulls her in tight ... and then goes in for a smooch, and later, a forehead kiss.

47 and his former model wife also put on a dance show for their fellow Americans -- Trump served up his signature "Trump dance," and Melania even got in on the fun by doing her own version of the move with open palms.

These two love birds are turnin' up the love meter on this fine Tuesday ... Can you guess the hot Hollywood couple in the steamy snap? Here are a few clues to get your foot in the door.

They met in 2014 on the set of their show ... One of these professional dancers won the Mirrorball Trophy with their partners, Joey Graziadei and Adam Rippon, while the other took home the W with respective partners, Xochitl Gomez, Laurie Hernandez and Rumer Willis.