Search Results: ex-girlfriend cheated

My exgirlfriend and I broke up a year ago after 3. She got with some other guy whom I hated a month after we split and was moving to another state with him. She cut me off " becasue she wanted to respect him." She blocked me on facebook and IG and deleted all our old pics. I spent my time working out getting a new job and dating other girls trying to get over her, but part of me was still angry. After not talking for about 10 months I wanted to get closure and my things. I wanted to speak to her because I truly didn't know how I fucked up. We talked for too long and even kissed and never got to exchange things. Later I she unblocked me and re added me on IG but I never friended her on facebook. I have been talking to her off and on (sort of arguing.) Recently though she added me on facebook. I was creepin her spotify and saw all the sad music she'd been listening too and her private relationship status. I figured she and her boyfriend were going through somthing, but I didn't speak to her. Suddenly she unfriended me again (no block.) I texted her about a week later asking her if she wanted to meet up ( I knew she was moving soon) and we never got to exchange things.( We'd agreed to meet up again in earlier messages) This time though, she denied it and told me not to text her anymore. I honestly wanted to get some lunch and tell her goodbye ( I guess because she knew I still had feelings for her?) I also think she was showing out for her friends (her friend read our messages.)

RECENTLY THOUGH I saw her on Tinder, so now I know for sure she is either single or cheating.
I just don't get why she would add me when I made it clear that I didn't want to be "just friends with her" and now she's saying "Don't talk to me" She is contradicting herself. I really do miss her, but she is fucking my head up.
I would be willing to forgive her for all the shit she put me through, but at this point, I don't know whether to follow what she said or what my instinct is telli

So my friend was dating this girl. I met her through him and we became good friends. After dating for a little over a month he cheated on her then broke up with her and is still with the girl that he cheated with. (She also didn't know he cheated till a month later, she didn't know why they broke up as he ignored her)

After the break-up he started to push his close friends (ie me) away and I haven't seen him much since.

I really like this girl and I think she likes me, but I don't know if it's ok to date my close friends ex. After i broke up with my highschool gf my best friend started dating her days later. He won't speak to me any more and I lost a lot of friends over that... It got pretty nasty between us... I don't want that to happen again.

I would appreciate your opinions and a yes or no as to if I should pursue a relationship or not.