Need advice from non loved one

by BH

My husband and I have been together for 19 years and married 10 with two kids 5 and 3. I am in a situation that all started 6 years ago and I am torn and don't know what to do.

My mom got a divorce 7 years ago which was her 3rd marriage and my husband really liked him a lot they got along great and it was a hard time for us. Then my mom met someone new and started dating this guy. Well the first time we all got together for a family holiday my moms new boyfriend and now 4th marriage was making dumb jokes (which my husband didn't like) and we were talking about how I can do the worm and my uncle said I don't know how that doesn't hurt you and my moms now husband said oh she just bounces off her floatation devices (boobs) well my husband immediately was pissed and ever since then has not liked him and doesn't want to be around him.

I still visit my mom and son stays the night with her sometimes but my husband doesn't like it and doesn't want me to stay the night at all. I'm honestly torn because my mom loves having the kids stay over and I like to stay over also but it has become a big issue with my husband and I feel like I am having to choose sides now.

Any advice would be great in what to do.