So sorry to hear about what you are going through... It is really hard not having the affection you crave. I don't think there is anything wrong with you as far as the casual thing. I've never been one to "pick someone up" either. There is nothing wrong with trusting someone with your body. In fact, I think it's a good thing. Too many women lose respect for their bodies based on their immediate needs. So bravo to you. As far as finding a new love...have trust in time and faith in love and when the right person comes along they'll be all yours. Just try to hang in there

Hey, hun, don't worry. WE all love you! So there! Stick THAT in your, err... instability and fuck it!

No, seriously, though, we love you. And we all feel for you. Everybody has been in a crappy spot at one point or another.

From what I've read on teh interwebz, most females tend to have trouble with causal sex. When we have sex, we release more oxytocin than men do. Oxytocin is referred to as "the bonding chemical" because it causes the people to bond. That's why women tend to want monogamous relationships more than men; we become more bonded to them than they do to us. It's just evolution/biology/gene tics and whatnot. That being said, some women don't feel the need to have relationships and are okay with causal fucks. And some men don't want causal sex but a relationship. So it's normal for you to not want casual sex; a lot of women don't. I know that *I* am uncomfortable with sex with some random person.

And, sorry to echo PeachCandy, and I know this isn't what you want to hear, but finding your new "someone just for you" will take time. It always takes time. XP But it starts with people-- you gotta go out there and FIND people. Get some more friends (one can NEVER have too many friends). Get back in tough with friends from high school via Facebook. Join a dating service or find some kind of get-together thingy. Find and befriend a gay guy who's willing to be your living teddy bear(just a suggestion, in case you, y'know, feel weird snuggling with a woman). Then it's just you being snuggly with a good friend, no sexual attraction involved.
Point is that it takes time and people. I know it hurts and is hard to wait; sometimes you wonder if your true soulmate wasn't somebody born in China who you'll never meet. But he/she IS out there, and you CAN find him/her! We believe in you.

If all else fails, you can turn on more lights and get more sunshine. That helps with depression (speaking from experience here). Also, stuffed animals. Because everybody loves squeezing the life out of a soft, cuddly, inanimate animal.

No words of advice but wanted to say that I share your pain. I'm still in a relationship but looks like it might be ending soon. And I'm lonely as hell. I'm the kind of person who thrives on affection. I never got it in this relationship and I won't get it for awhile. It's hard to deal with.

Well, if the Loneliness Fairy has a sledgehammer, then you need to get yourself a bug zapper racket. THAT ought to take care of her.