Ok, here's my advice and it may not be good.
Go out and have fun. Spend time with your girl friends and your male friends that are in your age group. Don't look for a hook-up. Just TALK and LAUGH and spend time with guys your own age.
IMO, you need to wash the fantasy out of your head. A 32 yr old guy can talk up a good game to a 18 yr old woman. He knew what you wanted to hear. Don't worry about feeling bad about it now: it is over. Just learn and move on.
A good way to do that is to spend time with guys who aren't into you sexually (if you want to be sure, pick a gay friend). Listen to what they have to say. See what is actually going on in their minds concerning all matters of things.
Phoenix is right. You will cope. It is what we all have done and a lot of ius will have to do it again. After the first time it gets easier.
Take care of yourself.