you should have plans on times like these instead of tagging along on hers with no plans. So in the future, make your own plans first. Not that you can't ever do anything together, just take care of you first.
As for her saying you are acting strange, well you just got told you can get a divorce for $100. Maybe you shouldn't be acting happy to see her. That's not detachment.
H 34 W 29 BD 3/12/18 Divorce Busted Spring 19
It is not things that bother us, but the stories we tell ourselves about things.
