So I just found out after talking to her about something that happend 2.5 months ago that my gf cheated on me. We are together for 5 months now so it happend in the middle of our relationship. This really hurts me as I am badly in love with her.

I know that forgiving her is not an option but I also don't want to break up. Could i demote her to a plate and find a better girl or is it better to cut all ties and try to forget her? I just don't want to continue being emotionally attached to her, it hurts me too much.