On the friend front, join the Fraternal Order of the Eagles if there's one in your area. Or the Rotary Club if you have some money and are more interested in improving the community than playing poker, and drinking beer. Or the Masons if you like pageantry and ceremony. It doesn't matter what organization, as long as you like what they're about. Heck, buy a Harley and join the Hell's Angels if you're all about power, money, and partying. Anyways, go join an organization.
On the girlfriend front, the surest way you can make that not happen is to keep harping on her about being scared she won't. Clinging to people makes them want to get away. By all means, tell her how excited you are about it, and if it's appropriate then tell her how important she is to you and how important it is that you guys are together, but don't keep expressing doubt to her.
Good luck, we're all counting on you!