Nobody should panic about being single. It's not something worth panicking over. Just go out there, talk to people, be yourself. If you see a cute chick go up and introduce yourself, strike up a conversation.

You're still young, but I know that the feeling of not having a companion sucks, but the best advice I have ever heard about the matter was this:

You have to be happy with yourself before you can be happy with someone else.

Being with someone new will only be a bandaid to whatever lies deeper within. A lover/ companion will be just that, but when time passes, even if you're still together, you'll still feel those feelings of incompleteness. Now, I'm not saying you have to accomplish all of your lifes goals before you should find someone, but you should be happy with who you are as a person and being comfortable in your own skin before you get comfortable in someone elses.

Also, maybe you should address whatever happened with your fiance. Eight months isn't a lot of time to get over whatever happened with the person you planned on spending the rest of your life with. You might feel like you're ready, but maybe something psychological is stopping you from knocking on your neighbors door. It's also not really fair to whoever you're with if you're still thinking about your fiance.

It's not wrong to have to take care of your own needs in regards to the people you hang out with. Maybe if they hit you up for money or beer, just tell them no. If they get pissed at you, then they're really not friends to begin with.

And have you looked into anything with the GI Bill to help with your college costs? You mentioned military employment.

Anyways, you've got people here who care and are willing to listen/offer advice or whatever.