My 13 year old daughter has gone beyond just wanting to hang with boys that are not good influences, now she thinks she's "in love" with one 15 year old who had NO parental supervision and is known to be in trouble a lot. I can't see putting her on lockdown, but I can't let her be with him either!! He rides her bus and that is where they met, so I can't keep him away from her all the time. I feel like I'm going to go crazy!

Drive her to school instead. If you feel there is a problem, there probably is. If you don't step in, then please be aware of the consequences. A stubborn 13 year will find a way. The times you will have to watch is when school is not in session. Unless they are released for lunch. Unfortunately, the more you argue the more determined they become. So try to use reverse thought process. If she needs to get to school, give her a ride. If she needs a ride home, pick her up. If she wants to go to a movie, take her to the movie. Stay with her as much a possible. -- Ace

It sounds like you and your daughter need to talk I wouldn't say you band her from any communication with him at all cause she'll just go behind your back I think you should monitor her in front of your face

I agree with not banning all communication, but I would advise limiting it. I would talk to her about how you feel about her wanting a relationship with this boy. Maybe even invite him over to your house or a family outing,as uncomfortable for you as it might be-what that way you'll know there will be adult supervision. That way it also gives her a chance to see if this boy is really worth it, and you'll have an opportunity to try and get to know him. He may surprise you and end up being a not so bad kid. It will also help your daughter to know that you're giving her the benefit of the doubt and that you have faith in her coming to her own conclusions about things. Letting her make her decisions is important. If the boy even doesn't show, well, that will tell both of you just how much of a sacrifice he's willing to make.

I think heather83's idea is fantastic.
Don't ban your daughter from seeing him, as not only will it make her farther from you- but she'll definitely try and see him more AND possibly behind your back! Your best bet is to allow it, BUT- with you there. Have him come over to your house rather than vise versa so at least you can supervise them. Majority of first loves don't last, so he most likely won't stick around forever anyhow, but at least while they are together, she can feel you were there for her too. Whatever you do, you don't want her to feel suffocated by following her everywhere as she'll rebel- show you trust her, but use plenty of adult supervision as well, because she's 13 and shouldn't be alone with a boy at that age in the first place...