Search Results: forgiving after cheating

Me and my girlfriend have been dating for about 3 months. Recently she admitted to cheating on me. The backstory is that We have not had sex because I told her I was a virgin and I need time to make sure I'm ready. She has had a lot of sexual experience and has usually has had sex by now. She told me she does not care because I have treated her better then any other guy ever did before so she did not mind waiting because she loves me. Yesterday she said she had something to tell me. She said that when she went out with her girlfriends she got drunk and ended up waking up to another guy after having sex with him. She said that this happened a week ago and she has felt horrible ever since. She said that she is so sorry that this happened because I deserve more respect and loyalty then she gave me. She said she would understand if I never want to see her again. She admitted totally honestly to me, no one else knows about it. I told her I need some time. Should I forgive her I really like this girl.

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