I need help...

Guys I don’t know what to do. I’m an introvert so it is really hard for me to make friends. Corona isn’t making things easier to do things either. I’m currently seeing this guy. I think I like him more than he likes me. I also did something please don’t judge I regret it immediately after I did it but it has been bothering me since I found out. He hasn’t deleted his dating apps even though we’ve been together for 3 months. Is that normal? I also feel paranoid and scared that he’s going to break up with me or he’s going to wake up and don’t want to be with me anymore. I also get paranoid that if he’s not talking to me, he’s talking to another girls maybe because I saw that he still hadn’t deleted his dating apps. It got so bad this morning that I was gonna make a Facebook account and message him as another girl to see if he’s cheating. I don’t just want to get my heart broken again so I feel like I should be prepared. (Please don’t judge me 😔😭) Also not having places to go is really messing with me because I want him to talk to me all the time. I know that sounds desperate and needy but I don’t know why I feel this way. Gosh, I suck at everything. I can’t even do this girlfriend thing right. I don’t know if what I’m saying makes sense I just wanted to say it out loud I guess