Long story short - I've been married for 5 years and my husband had 2 kids in a prior relationship. She has since moved on a remarried and had a child with her new husband. We co parent really well together and I really have no issues with her. There are even times where we sometimes babysit her other child because she needs it and it's really not an isuse for me. They've been broken up for about 16 years so I truly believe their friendship is strictly platonic, nothing else.

Well her and her husband are having a lot of issues. She's expressed wanting to leave and possibly get a divorce. She was telling my husband on the phone that she was looking at apartments but they're way too expensive for her right now. After that conversation, my husband asked me my thoughts on her and her other child moving in temporarily while she either goes through a divorce or a separation.

And while I like her as a person, I just don't see this ending well. We haven't talked logistics like how long, paying rent, etc. But even without this information, I still think my answer is no. I think it's an easy way to have our great co parenting relationship turn into a bad one. My suggestion is we take the 2 kids full time while she figures something out. I have a feeling this will upset my husband because he feels like he's helping the kids out by helping her out.

Am I the asshole for saying no to this arrangement?

TL;DR my husband wants to move in his baby mama temporarily while she finds other housing and/or figures out her stuff with her husband