Ben Affleck Joined Jennifer Lopez at Her BFF Leah Remini's Birthday Party!

Ben Affleck and Jennifer Lopez have made their Instagram debut, though it wasn’t on either of their accounts!

The on-again couple showed up in a photo that was included in a montage posted to JLo‘s BFF Leah Remini‘s page.

Click inside for all of the details…

Leah celebrated her 51st birthday on June 15 and it looks like she had a fun time at her party, which was attended by Jen and Ben.

“#tbt to not that long ago,” Leah captioned the video on her page. “Wanted to share a little video from my birthday with you all because I got so much love from you on my birthday but also everyday. I consider myself to have the best support system here on social media. Also, I can’t thank my family & friends enough for coming, for celebrating with me in a way that was very special to me. It’s been an interesting year, so this birthday meant a lot for many reasons. I love you family, I love you friends that have become family.”

A black-and-white image of Jen, Ben, and Leah shows the “Let’s Get Loud” singer placing her hand on her boyfriend’s chest while he has one arm wrapped around each of the women.

Bennifer fans are going to love this new report about the couple’s relationship.