To start off I just want to make clear I did NOT cheat on her. I love her dearly and would never want to risk our relationship. Also, we are long distance and have been dating for about 3 months, talking for just about all of 2019. There have been multiple incidents, mostly me being an airhead, that have affected her trust in me. A week or so after we started dating for example she saw Tinder in a screenshot on my phone. I simply had forgotten about it, but obviously she was very upset and pretty sure I was cheating. Then there was an incident when she visited last month where a random snapchat person posted nudes on their story (a thot bot I forgot to delete), I only actually use snapchat to video call my girlfriend. She got pretty upset again because it looked suspicious. More recently I revealed that I slept with my friend a while back and she was unhappy with me for hiding it. I honestly just didn't want to upset her or lose a friend, but that was obviously not a good plan in hindsight. I really care about her, but how do I get her to trust me? And how do I help her be able to think of me sexually without picturing me with other girls?