LGBTQ related advice needed

Katie

So my girlfriend had been talking to some guy behind my back for 3 weeks. Honestly I wouldn’t have cared as I’m very open if she would have told me. Not including the fact that she told him that her and I were FRIENDS! ( god back in the closet for me I guess?) Anyway I stupidly took her back after she told me she blocked him on everything (after FINALLY telling him and him stating she needed to choose AFTER she was staying at his house without telling me) *yes I realize how DUMB I am* Fast forward to today, she blocked him about a week ago. I see she’s following him back on Instagram 🙃 no mention to me or anything. So Im not asking what to do with my situation. I want to know ways to make sure I don’t go back. I deserve someone that will put me first and I know that, but its hard to not miss her.