First and mostly, my younger brother. I can truly talk to him about anything.
Secondly, my girlfriend. I have been talking to her about all my social issues and how hard it is being around people, and she actually empathizes with me, as she has felt that way too, although I don't think to the extent that I have. I also don't know what she thinks about all I have told her.... I sometimes wonder if she's kinda freaked out about it lol. I said well, I'm just being honest.
It took me a long time to figure out that telling people things that are personal is not the end of the world. Sometimes it's OKAY to get things out there. Things that are giant and embarrassing to us are really very minor to most other people I think.