How do you get over a crush?

I caught feelings for a guy I met a while ago. I really fell. He was super sweet, patient, and we had a lot in common. He is about 8 years older (I'm 23 in a few weeks, and he just turned 31) and we had been anticipating going on a date since November (the last time I saw him.) But we texted all the time and called every day once the summer hit (we had busy schedules and once summer hit I was waiting for him.) It was going well until I went to the shore with a good friend of mine (who happens to be my ex.) My crush had been cheated on before and saw it as a jab but didn't say anything about it bothering him until I told him a week or two later that I was watching a movie with him online (my ex lives about an hour and a half away from me so it's tough to see him and he goes to school about 4 hours away.) I don't see him a lot but we're a kind of close. My crush knew that and never had a problem with it until he asked if my ex knew about him. Of course I told him that. He asked why I didn't say he was my boyfriend and then freaked out that I was telling him anything at all (I guess my wording was a little weird. I said to my ex that he was there and existed and a good guy. That's it. Nothing bad, and my ex is getting over his girlfriend.) My crush was asking why I told him anything about my personal life that has nothing to do with him anymore. And I should have not gone with him alone, and he told me why I went with him and why I didn't wait until my other friends were free (who are girls.) He asked if I was drunk. There were a few times I didn't answer the phone because I was busy doing things with my family (one time with family and then friends and I didn't have time in between and he reasoning was that I could have answered to tell him that and I had no excuse not to.) Thinking about it, he was right about two of the times. But the last time I was with family and we were talking (don't get to see these relatives a lot as they don't live near us. We were visiting them for a few days) and it was late and I didn't know how long the conversation would be and I didn't want him to wait (it was already past 11 when I texted him back. And I texted him again.) If I had know I wouldn't hear from him again I would have called him back when I saw the missed call (he was working all day so I couldn't call earlier.) I told him I'd call him back the next day and I did. No answer. He left me on read and that was it. His perspective was that I was so busy I couldn't make time for him and other things were more important to me than him. Maybe he was right but I have always kept my word and since we argued about the whole shore thing (I'm not the type to cheat. I was ready to be committed, I don't do one night stands especially if there is someone I'm interested in) we talked and worked out way through it. I talked to my mom, my best friend, and a few friends about it and they thought it was obsessive that he reacted that way when we hadn't even gone on a date yet. Maybe it wasn't that I just told him and did call him the next day but a lot of little things added together. Maybe the bigger picture. I know I didn't do something wrong with asking to call the next day (and doing it.) But maybe it was everything and that was the last straw. I fought him on a few things (defense mechanism and I hate it.) Long story short, I was lucky to have someone so kind and patient and I blew it. How do you guys get over a crush? I know I messed up and I'm trying to learn from it. Last I heard from him was Wednesday which is when I went to visit relatives. Now I'm home and just feel miserable. I just want to be with my feelings and I'm trying not to focus on it but I kind of bottled them while I was with my relatives and I have a tendency to just internalize them. I'm trying not to text or call because my mom and friends think it's for the best if he was reacting that way. We had called each other sweetie and other endearing names and started kind of acting like we were together (even though we hadn't gone out. I had been a little hesitant about doing so before things really started but we were making the best of conflicting schedules). And I think that was part of why it hurts so much. I totally understand why he wouldn't want to talk and I also understand why my friends and mom want me to stay away (my friend met him a few times and two friends have talked to him because he asked me to pick up and put him on speaker to talk to them.) It's a little weird but I also messed up. Maybe I knew it wouldn't work but I really wanted it too. Thanks in advance for the advice