Should I tell my best friend that I'm in love with her?

Well im Oscar (17) in high school and I have a best friend (17) in high school her name is Betty. We met two years ago and when we met, we became realy close friends. I went to a lot of dances together Homecoming and Prom. You name it, we do it together. She has helped me through so much and I do and will always do the same for her. Well for the past 4 months she has had a boyfriend who is good friends with me too. I have recently started having feeling for Betty wanting to be with her...I've fallen in love with her. But she has a boy friend. Heres the thing though. Betty talks more to me then she dose to him, she sees me more, and we hang out more like spend entire weekends together. Also a recent thing that happened someone told Betty's boyfriend that it seems like Me and Betty are going to end up running away together, and shes going to leave him for me. Whe the boyfriend herd this he was realy paranoid to the point where I felt realy uncomfortable to even hanging out with Betty. I decided to keep my distance away from her...but she was willing to break up with him if it ment that I would talk to her again. Right now betty and her boyfriend are still dating but part of me wants them to break up and part of me dosent. I want to be able to tell her how I feel. But I cant. I dont want to hurt the kind of relationhip that we have. What should I do? Do I have a chance with this girl? Shoul I tell her how I feel?

I think maybe you should continue to give her space & give her subtle little hints that you like her as more than a friend. If you get the same impression back from her in return maybe it's time to have a talk. If she really likes this other guy you should be careful not to intentionally try to break them up though, because that'll only push her away. She has to have a lot of respect for you to put her relationship with you over her boyfriend/girlfriend relationship. Who knows what could happen..many terrific relationships start with friendship & blossom into more. You're still young, give it some time.

Of course you should tell her that how you feel.

Dear obtbone,
Still talk with Betty but do not socialize with her when she is with her boyfriend. It appears she sees you more of her best friend at the moment. Just keep things going this way for the time being. If she truly just feels you are her friend then there is nothing you can do to make her feel the same way you do. If she is just going through a confusing time right now she may end up with you after all. The thing is not to cut contact with her but keep being there for her as a friend. Perhaps this will be rather difficult feeling the way you do about her but sometimes we need to experience a little pain before we win in the end. Either way her friendship is all you have for now and you need to be grateful for this.
Sue..good luck