It's the stuff of guys' nightmares: your girlfriend hanging out with your ex. That's what Joe Jonas went through when the love of his life Blanda Eggenschwiler ditched him to hang out with his former girlfriend Ashley Greene, E! News reports.

But what could possibly be the purpose of the two's meeting? Is it maybe because Eggenschwiler wants to know the intimate details of Jonas' and Greene's past relationship? Or are the two girls plotting something against him?

Fortunately, it's none of those things (we hope). The gal-pals were spotted bonding at the Color Me Mine in Beverly Hills last January 25. They participated in a pottery painting session with their friends Jared Rubenstein, Cara Santana, Ellie Beltran, Julia Anderson, and Joseph Chase.

It seemed the two had a very fun time. Greene even posted a picture on her Instagram account to show off her artistic talent but wrote, "Definitely not telling which is color me mine...A for effort?"

Joe's girlfriend posted the same pic and wrote, "We are pottery heads."

Check out their group shot posted on Santana's Instagram.

Joe and Eggenschwiler began dating in 2012 while he and Greene were together from 2010 to 2011. In 2013, he revealed details about his relationship with Greene in an essay published in New York magazine. He wrote, "I lost my virginity when I was 20. I did other stuff before then, but I was sexually active at 20. I'm glad I waited for the right person, because you look back and you go, 'That girl was bats--- crazy. I'm glad I didn't go there.'"

He also wrote about his current girlfriend said Eggenschwiler is someone he really cares about. "We get each other," he wrote.

Aside from Greene and Eggenschwiler, Joe also talk about his experiences with former girlfriend Demi Lovato and how the singer-actress used to struggle with drug use at that time.