The cousin thing was bugging me as when I got into a convo about them adding each other, he gave off the impression like he was about to ask her out. They're not blood-related, only to me they are, but it kind of gave me a very uncomfortable feeling.

I'm sure my ex-friend is very well aware how much I hate her, as she went out of her way to make sure she could make my life a living hell. The only time she has ever tried to come back and be friends again was so she could regain my trust and then crush me. She has caused me a lot of emotional distress and when she comes around my anxiety goes crazy. I do not reply to her usually, and if I do it's just to shut her down, tell her to go away but the anxiety hits no matter what I do.