i have not cheated- i'm her first boyfriend but she isn't my first girlfriend. the first never affected her, i don't bring her up, she just is very hurt that i had been with someone else. which also, i completely understand. but i do love this girl i just don't want to give up something important to me
maybe this doesn’t apply to OP in which case i apologize. but i’m kind of tired of people coming here asking for advice in bad faith. like this post just reads like ‘i’m a perfect bf and my gf is being obviously crazy, why is she being crazy?’ either she is being irrational which you already know or you are withholding some details that would explain the behavior
also only my first comment was uncalled for so sorry about that, but everything i said after was real advice. we literally cannot explain this based on the context we have do you need to communicate with her about why she doesn’t trust you. that’s pretty much what 3 said too. if you don’t like my bluntness then okay but i wasn’t being an ass for the rest of it