He and his brother are in town for the graduation and are staying with us.

They're family. Extended family, I suppose the term is nowadays, but family just the same. My wife grew up in an environment that everyone adopts everyone. Ex's parents are "mom & dad" to my wife (they'd be staying with us as well if they could have made the trip). Her best friend's mother is "mom" to my wife. She's leaning towards that sort of thing with our kids' friends, being "mom" to them as well.
She's real big on family, however the bonds may be created. It's been a wonderful change for me, as dysfunctional as my family was growing up (dysfunctional in the sense that it was boring, out-of-touch, etc, rather than abusive).
I wasn't so much excited to see her with her ex, rather I was excited that she was home and not wrapped around a tree. They're bound together by the child they created, but she's married to me. I don't have a problem with it. Besides, I'm not much of a drinker, so she gets to exercise her "alcoholic gene" when in their company. She intends to get ####-faced at the party tomorrow night. lol :fingerscrossed:

leaseletmegetlucky:

leaseletmegetlucky: