'Jersey Shore' Ronnie TGIF My Baby Mama ... And 'F' is for Forgive

7/6/2018 12:50 AM PDT

'Jersey Shore' Ronnie Ortiz-Magro Eats With Baby and Baby Mama Jen Harley

EXCLUSIVE

'Jersey Shore' star Ronnie Ortiz-Magro is truly a man of forgiveness -- breaking bread with his baby mama and friends -- like their bloody domestic dispute never even happened.

Ronnie was at a Friday's in NJ Thursday with Jen Harley, their 3-month-old daughter and several friends. As we reported, Jen flew up from Vegas a few days ago to spend the Fourth of July holiday with Ronnie. 

A witness tells us the couple seemed calm, cool and relaxed ... and Jen mostly tended to their kid.

TMZ broke the story -- Jen was arrested for domestic battery last month in Vegas -- after she allegedly attacked Ronnie in their car and dragged him out the passenger's side. 

Prosecutors ultimately decided to drop the case -- due to lack of evidence. Seeing as how they're hanging out again, doesn't seem like Ronnie would be in a hurry to testify against her, either.