Okay, so my girlfriend was out last night and had her first drink. We've been an entirely sober couple, and I have expressed my concern about this and she's just doing that "It's my life" thing and to stop worrying. I know this sounds wimpy but it's such a big deal to me right now. I keep thinking that she hangs around with bad influences, but I don't want to be that sort of guy that restricts her on what she does. She's been just so... oblivious to how much I've been worrying about this... I have no idea what to do. Any suggestions on getting her to understand my concern?