Jim, 56, and Alexis, 42, threw an epic 13th birthday party for their son James.
Alexis posted several photos and clips from the bash. It included her and Jim singing James Happy Birthday along with several of his friends and loved ones.
Andy, who went social media official with Alexis back in February, not only attended the party but also got romantic with her while there.
They playfully ate from the same donut from the donut wall that Alexis got James for his big event.
Jim and Andy were seen mingling with other guests but didn’t interact with one another.
Alexis and Jim, who were on RHOC for four seasons beginning in 2010, split in June of 2018 after 13 years of marriage.
Court documents later revealed that Alexis would be receiving $10,000 a month in spousal support from Jim, plus $2,000 a month in child support for their three children until they turn 18.
Are you surprised to see Jim and Andy at the same event? Sound off in the comments.