<human>: It's like my only social outlet. I work, I go to school, I have personal hobbies, and I've been going to the gym. My friends have all moved away and the only one still in the area became basically dead to the world when his fiance moved in (I am so happy for him, though).

My ex became my best friend when we were together and I loved her so fucking much. When we broke up, I lost the last vestige of my social life and pretty much my whole reason for living.

I was a late bloomer and had never tried the hookup thing. Turns out I'm okay at it. But, aside from one situation in which I think I must have just had really good sexual chemistry with the girl, the sex has basically sucked. It's empty and depressing, and I find myself missing my ex more and more after each fling.

But she's dating someone and I haven't not dated someone since I dated her. It's like I want what I lost back, even though I can't possibly get it from someone else. And I don't know why I keep doing it because it's awful and actually really selfish to do while I'm still harboring feelings for my ex. I don't know what I'm expecting to find.

And it's funny, because I grew up thinking that this was the gold standard of manhood and it's a place I've strived to get to, but it's just fucking awful. I don't know what to do anymore. Clearly, I'm supposed to stop, but I can't handle the idea of being lonely again and just wasting away in my room.

Summarize the given text in a few sentences.
<bot>: casual sex might actually be awesome, but not while missing my ex and having no other social outlets. Not sure what to do with myself.