Hi BL42, I strongly support what Ginger and DnJ shared. I had one more thought--

Originally Posted by BL42
I dropped them off at ExW's and saw mutual friends at her place with her and OM2 instead of me and also OM2 in a "family costume"

Then on Tuesday I found out D3 later didn't go to preschool due to a meltdown with ExFIL.

ExW asked if she could come in and sit on the couch with D3, which I agreed to.

My XW and I are 11yrs divorced. I've never seen her boyfriends. She's never stepped foot in my home. My XGF saw her XH twice in the three years we were together. While working through your feelings towards OM2 would be helpful, it should also be possible to restructure your handoffs such that you see a whole lot less of what's going on over there. In my case, the person taking custody does the picking up, hand-offs happen at the car, the kids walked out on their own once they were old enough, and we leveraged school and daycares for contact-less handoffs.