Jennifer Lopez is embracing her modern family, posing for a photo sandwiched between ex-hubby Marc Anthony and her current boytoy Casper Smart, and Breaking Celebrity News has the details on why the exes reunited.

The three of them gathered, along with Marc's girlfriend Shannon de Lima, to celebrate Marc's son Cristian's 12th birthday — his son with ex-wife Dayanara Torress.

"Happy Birthday Cristian!!!!!!!!!!!!!!!!!!" J.Lo tweeted along with the photo on Thursday night.