I'm a 22-year-old guy and I've made a significant mistake with my 21-year-old girlfriend. I'm seeking advice on how to repair our relationship.

Hello Reddit, I created this separate account to maintain distance from my other one. To start, my girlfriend and I have been together for nearly two years, making significant progress as a long-distance couple. I love her deeply, and she is very steadfast and supportive when it comes to resolving issues. However, there's one concern she's still holding on to, which I was unaware of until she mentioned it a few days ago. To give you some background, we met in December 2017 and started dating in September of the following year. We had a wonderful relationship for several months until March 2020. At that time, she didn’t share that she had BPD, and her friends influenced her decision to break up with me. We didn’t speak again until January 2023, when we decided to pursue a more serious relationship. In June, we met for a night to discuss our future together, and by July, we were officially back together. We have been seeing each other every other week due to the travel expenses, and I've met her parents and grandparents, who welcomed me openly. Likewise, my family has been supportive and even inquired about when we might get engaged. However, I find myself struggling with an issue that arose in July. I initially had difficulty trusting her and was cautious, but I continued to express my love and take her on dates. Eventually, we became intimate, and I felt a profound desire to be with her constantly. Unfortunately, I developed a porn addiction that I couldn't shake off. I found myself caught in a downward spiral, and while I wanted to tell her about it, I was afraid it would hurt her, so I remained silent. One day, she saw a notification on my phone revealing that I had subscribed to an OnlyFans account, which made her really upset. We discussed it, and she said she would forgive me if it happened again, so I gave her access to my phone to monitor my activity, knowing she had trust issues. I never repeated that mistake, but there was an incident later at her place where I attempted to get intimate with her, and she rejected me. It escalated to the point where she kicked me out, and then she cried, which made me feel terrible. She has shared that her ex-boyfriend had hurt her in the past, and now it's hard for her to disconnect that experience from our relationship. She's given me some time to address this issue, but I'm uncertain about our future together. I want to show her how much I care and that I would do anything for her. I genuinely love her and I'm remorseful for my mistakes. I want us to move past this and work towards making things wonderful again. If this post isn't appropriate for the subreddit, please delete it and let me know where I should share my story. Thank you.