...I think there was one friendship that put me off those close-knit, talk-all-the-time friendships. I'm still chummy with people, can have a laugh, but I'm closer to my siblings.

In high school, I made friends with a girl who had a few learning difficulties. First year, we were kinda into the same things, and I mostly bonded with her over a mutual hardship with someone else. But she became overbearing at times, and though I never felt as close to her as she did me she called me her 'best friend'. I stuck around out a guilt, shyness and uncertainty. I was a kid, I didn't know what to do. She would call me almost every night to relay all of her problems, and would frankly refuse to let me off the phone without prodding. Her parent admitted to me that it was hard for her to take 'no' as an answer. I knew it wasn't her fault. But I became stressed out an anxious whenever I was in her presence. My mother began seeing how miserable it made me, this was no longer a friendship. She told me 'you're not her shrink, or her parent. You're not responsible for her every problem'. I felt pressured and trapped, though this girl DID have other friends. I felt terrible because part of me was growing to resent the entire situation.
Eventually, when I left school, I broke contact. Even thinking about it now leaves a sinking feeling in my chest, as well as guilt. But I couldn't FORCE myself to like her that much. Most of the friendship was me being supportive.

After that I viewed friendships like a chore, and have no desire for friends.