I was a little worried because SO is moving in today, the day after my youngest's birthday. It really couldn't be helped. SO needs to be here to start his new job on Monday. But SO and I discussed it and at least made the effort to not have him move in on my son's birthday.
DS19 is actually okay with it. He even made a joke about getting a defacto stepdad for his birthday. But still, his birthday should be about him, as much as possible, and I felt bad that he might be stressing about SO moving in this weekend.
Anyhoo, I took my boys out to dinner last night, and asked what the birthday plans were with their other parent for this weekend. Turns out there's something going on for "the new side of the family" today and DS19 told his dad he didn't want to share his birthday with them. So he may do something with his dad on Sunday, but last time he talked to his dad, ex said he hadn't told anyone else in the family that yet.
Once again, ex put someone or something else before his kids while I took my kid's feelings into consideration. I win! I am still the good parent.
And yeah, sometimes I still really am this petty. I'm good with that.