Real bummer that's how your first time went, but at least it's done with. The first time goes a lot of ways for a lot of people, but everything gets better from here on out!
I can say this, from having met lots of girls over the Internet, there are LOTS of different kinds of women in the world, and so very many of them are just looking for sex over the Internet. Take that how you will, many guys see that opportunity, but if you're looking for a girlfriend over the Internet, you've got your work cut out for you.
It's not to say that you won't find a girlfriend from the Internet, that has also happened for me. Had several relationships turn into multiple year relationships with these girls, and many times it was my fault that they ended. Not EVERY time, but generally I just wasn't fully experienced to treat a girl the way they needed to be treated, and I'd lose them. Didn't help occasionally I'd be checking out some other girl, but most of the time they didn't know that.
In any case, there's a billion women out there, more actually, and this one was just sex. Unfortunately you're learning this the hard way, but really, that's it. She was sex, time to move on. There is nothing you can do to change this, other than not contacting her ever again. The dreams that'll randomly pop up are the WORST. They will mess with you, cause they strike you when you are most vulnerable, but again, DO NOT CONTACT HER. Do NOT go to Facebook. Do not check anything that could be a means of contact from her. She is gone, and nothing will change, except for you. You have to change, in the means of, not thinking about her, and moving on. And when they happens, you will be so much better for it. It helps to be doing what you can to prepare for the next girl.
Make some awesome profile on some of those dating sites, preferably the free ones. Shoot, make your facebook profile better. Best of all ideas, work out. Start jogging, doing pushups, buy some workout equipment from your local stores that have that stuff. For me it's a Big-5 store, although I have plenty of stuff at this point.
Make some decent friends in online co-op games. Those are the ones that'll do it. Call of Duty, not so much. Left 4 Dead, Fear 3, Syndicate(if anyone is actually playing it, and with a mic at that), whatever other co-op games out there, play those online. Having to work together with someone, and finding them to have a cool, giving personality, will be the coolest people you'll make friends with online.
Having someone you can whine to, or bounce ideas off of, and will give you a serious, thoughtful reply, are the best friends around. Especially if those people give you sound advice, like to move on, this one wasn't the one for you, you're better than her, etc.
But most of all, the working out bit, is good advice. Being in good shape will turn many heads. Get a haircut while you're at it, if you haven't yet. Do some manscaping possibly. Do everything you can to look as good as you can. Women notice that. Eventually you'll be the digital pimp, and trying to remember who your first time was, cause you got just too many girls to count now.
