I just got back to university, and my friend group and I went and had a really good time just hanging out, even though I didn't say much and just happy to be there.

It was one of the best feelings I've had since I left last year, and since I was feeling good about myself I decided to go on a dating app I had an account on just to see who was around. I recognized someone who I'd talked to for a while last year. We were never romantic or even met physically but we always had good conversations, and we were still on friendly terms when I decided to take a break from dating because I realized it was sort of a trigger for me. So I sent him a message just to say hello, a little nervous but pretty sure that he would just say hello back and talk about what we did over the summer or something. 

And then he blocked me without saying anything and it just feels like someone punched me in the gut and now I feel worthless and ugly and annoying and not sure at all what I did wrong.

Sorry for the whining. It's just too pathetic to tell anyone but strangers on the internet.