18M need here, need help to deal with 18F overthinking
Basically I met this girl 8 months back and everything was going extremely well but 3 months back she found out I had a girl best friend (before I met her, I blocked her and cut all contact already) and our relationship has been getting ruined day by day. She overthinks about that girl a lot because I was very close to her and I also did sexting with her like 2 or 3 times. I want to help my girlfriend solve her overthinking. What do I tell her? And I know shes not mature enough for a relationship since she cant let go of the pass. All her friends are the same saying its unacceptable I did it. Idk what to do, it was before I knew her. But I love her so much so I want to fix this and build our relationship back. Please help