I just need advice, I was in a 4 year relationship and it ended pretty badly. He ended up telling me it was all my fault and blah blah but I know it wasn’t and I was extremely confused bc I was putting so much into the relationship. Anyways later I found out he had been cheating on me for a while and broke up with me to be with a new girl that he had been talking to ( I don’t think she knew we were together). It hurt a lot but I was forced to move on. Now, a few months later, he began trying to text me again and has just said little things like “I can’t go anywhere without thinking about you”, “I wanna call you sometimes”, “I’ve been thinking about you”, and more things like that. I’m happy to report that I HAVE NOT responded! But now I’ve been seeing him on tinder and he is still with that other girl. She post things about him all the time. I haven’t yet because I didn’t want to get involved but am I supposed to tell her? I don’t know if she would believe me or if he would just manipulate her like he did me. But I feel guilty letting it happen while I know. I just know if I were her I would definitely want to know. I’m leaning towards not doing anything about it and not getting involved but just wanted some other opinions!