My (f26) boyfriend (m30) kicked me out and said we're breaking up after he found my FTN on my old phone. Help with what to do next?

Throwaway account as this is embarrassing lol<br><br>We've dated for 3.5 years and have never had serious problems, although I've always had the feeling he's watched a too many red pill videos so I try to be extra thoughtful and considerate of his space in our relationship as he's mentioned that before he likes having a lot of space and being alone to cope with stress (my anxious brain always worries about hurting him). He has talked about being cheated on before but he's never mentioned that cheating's unforgivable for him. He is very mature for his age (or at least tries to be), so when we get into arguments he always asks me to take time to cool off before we talk things over.<br><br>I have a bad habit of making friends with people from when I was younger, especially from high school. I've always compared it to keeping in touch with coworkers, but he thinks it's weird and creepy. (I used to use an app that's mostly used to stay in contact with old friends in case you wanted to reconnect) Before I met him I had a Facebook friend from high school that was close to me when we were kids. We weren't exactly best friends growing up but we were always somewhat close and had a lot of the same interests. He had a crush on me back in the day but I wasn't too interested in him. He had a huge crush on me for a long time but he was a lot older and in a different friend group. I still had his number and would talk to him once in a while, mostly about school and our different interests. It was completely platonic and I was very transparent about having a boyfriend and wouldn't indulge in anything romantic.<br><br>I got a new iPhone a year ago and he helped me wipe my old phone to trade it in. He sulkily "joked" that he wasn't going to look through it at all, but I have a feeling he was eyeing it and went through it after I left for work one day. I didn't think too much of it at the time.<br><br>We had a small argument the next day because he made a comment about how I'm not a good girlfriend for some reason, but I don't remember. (In hindsight it really didn't matter, but it made me feel a little hurt) The following day was Valentine's Day and he kept making passive aggressive comments about how I'm a bad girlfriend. He ended up giving me flowers and then left for work immediately after in a really bad mood. I didn't see him the rest of the day but he texted me saying he wanted me to move out as soon as possible and that he was cutting off contact. He blocked my number and social media so I can't contact him, but he has told our friends that he broke up with me because I cheated. He's also posted on social media that he's no longer in a relationship. I'm staying with my parents and I am in the process of moving out. My best friend, his mom and sister, and my sister have tried to reach out to him to talk it out but he won't listen.<br><br>He's never been in a relationship this long before and he told me I was the love of his life, so I'm just wondering what the heck happened and if there's any way I can salvage this relationship. I don't want to "win him back" necessarily, I just want to see if there's a way we can work things out. Any advice would be appreciated.