<human>: Summarize the given text in a few sentences.

Settle in, this is a long one.

I've been in and out of a funk for the last three years of college. The first year was a breath of fresh air after spending three years watching my parents marriage slowly fall apart in screaming matches. I hung out with my friends all the time, would get calls to hang out, all the good stuff. 

Then the next year I felt that slowly go away. I'd get called less and less and suddenly I was the guy watching my entire friend group popping up on my feed about all the stuff they were doing. 

Then came that summer where my group started hanging out with a bunch of other people, yet I was never invited to anything, especially when it involved the new people. This culminated in my birthday, when my entire group went to a party, except me. This was my rock bottom. This is a group of people I've been best friends with for over ten years. I felt so broken.

This has led me to feelings of being completely used. And I started noticing it in other groups and even new ones. It felt like people only wanted me around when I'm doing a favor. Even now I still feel that way about all but a few friends. I'm the guy to call when you want something and to hang out at lunch, but don't invite me to hang out or anything.

I've improved a bit, but I feel myself going into another lapse in the last few weeks. My car broke down, my roommate moved out of our dorm for no stated reason (I shower,am slightly tidier, etc). 

I honestly feel like if I stopped being social (texting, sitting with people, etc). No one would care that I'm not around...unless they want something from me. I have to go out of my way to hang out with people and no one ever asks me to hang out randomly or tries to set up plans. And this seems to be the end result of any person I become friends with. I feel like no one wants me around unless I'm useful. 

And of course I have no one to talk to this about. I'm an only child emotionally distant from my family since the divorce. I feel completely alone and unwanted.
<bot>: I feel like nearly every friendship I make is a one-way friendship where I'm the only one invested and like no one would want anything to do with me if I didn't help them out of the occasional jam.