The weirdest ex/hookup I've ever had..

A few years ago I got out of a super rough breakup and decided to download tinder. I matched with a nice guy like no warning signs or anything he was average and charming. We made plans to go on a date and he came to pick me up at my place and we were hanging out at the mall, saw a movie and got some food. During the movie he was very very close for someone on a first date and was touching me and I think he even grabbed my boob idk I had major butterflies then and wanted it to happen because I have never had sex with anyone besides my ex and I was craving affection and was desperate from my awful breakup. I honestly didn't care. After all this we drove around for a bit thinking of what else to do because we were having a good time and I didn't want to go home. We ended up driving all the way out to his city which was about 40 minutes away from mine and we walked around a Walmart for some reason and then he decided to take me home because at this point it was very late and he didn't want to drive me back so the plan was I sneak into his house where he lives with his mom and brother, I sleep over night and he drops me back off at mine in the morning. I'm still surprised I didn't get murdered. After I got into his house we watched a movie and had sex. We wanted to have full on sex but no condoms were available (only smart decision I made this entire day) so he wanted to 69 with me. I've never done it before and he was a virgin. He literally put his sweaty ass on top of me and it was the worst sexual experience I've ever had. Ever. I figured I'd go on top but without any warning his entire ass was in my face. Ew. Anyways I gave him oral and he lied about c*mming. I have no idea why he lied but he told me he already came mid blowjob and I definitely would have known if he came right??? I mean.. what??! He swore he did and I let it go because wtf but whatever. We started seeing each other after this for about a month. it was a very short relationship if you can even call it that. He came over to my house often and we always had sex when he was over which after awhile I was annoyed by and I just wanted to actually hang out with him. He eventually stopped responding to me for days and I'd get like one word responses out of him every other day and he would just ignore me. I asked him to come over and he said he couldn't because he had work but he only worked like 4 hours morning to afternoon and could have come over literally any time throughout the whole day and I get being tired after work or not wanting to go anywhere but at this point I hadn't seen him in days and he put no effort into trying to see me. I ended up in the hospital from my throat closing up due to a serious case of mono and he didn't text me or come see me or anything and he blocked me on everything while I was in the hospital. I texted him from my moms phone to try to get in contact with him because 1) he had an important necklace of mine in his house. 2) I had no idea what was going on and was legit terrified that something awful happened to him or his family. He blocked my moms phone after I literally begged him to just give me an explanation or talk to me so we can at least figure it out. I had to get multiple friends to harass his social media's and at that point I didn't want to talk anymore I just wanted him to mail me my necklace. He ignored my friends and blocked them at first but they weren't giving up and he eventually messaged me to call me names and tell me he's mailing the necklace. He deleted his social media's, I got my necklace and i have never spoke to him since. Also not totally convinced that he didn't give me mono 😬