my hs girlfriend/first love/kiss/lay, etc, who cheated on me thoroughly with an ex-boyfriend, has hung out with me a couple of times now 7 years later. we hooked up. she sends me daily messages/calls. she works an hour way, but she's back in town this weekend. i just found out that she has a boyfriend presently who is doing a semester abroad in china. she never told me about him, and is cheating on him with me.
i have absolutely zero attraction to this girl anymore. she is good looking, in my opinion, but she is essentially an actress who fakes so many emotions to get what she wants, that she doesn't even realize what she's doing. yet she is pretty obviously now as obsessed with me, as i was with her 7 years ago. my question is - should i tell her i know she has a boyfriend, and that is why i don't want to see her? or just ignore her (like she did to me 7 years ago when i called her out on cheating on me).
i don't want to be cruel at all, my motive is not vengeance, but she needs to get taught a lesson.