Song for a friend dating the WRONG guy?

My friend is about to start seriously dating a guy she met online 2 weeks ago. I'd get into it further but this is Yahoo! Answers :) Any how, it's going to be a total disaster, but she has completely fallen head over heals for this guy. Ugh. I'm one of her best friends, she comes to me for support and encouragement. At this point I am supporting her and trying not to encourage her, if that makes sense. She knows how I feel. Anyway, to the point. What song says, you are going to ruin the next few years of your life by dating this d bag?