While she will get jealous that doesn't always result in the desired effect. Sincerity about how one feels, demonstrated with confidence ALWAYS gives a desired result. If she "runs for the hills" she didn't want you, If she did want you and you did do that, believe me she will say goodbye to that boyfriend of hers as soon as you finish your sentence. You don't need to "have the penis in the relationship." If you let a sense of animalistic macho pride get in the way, you can lose sight of what you wanted in the first place. For some, this is good. Because sex with strange women and new women can become a very exciting lifestyle. But that doesn't sound like your goal here. So trust me, you should be sincere about what you want and confident that you can have it, not afraid. If it doesn't go your way, then it sucks and you just need a new goal.

While I wish this were true, its not. Saying you have feelings for someone when she doesnt have feelings for him will not make her gain interest. To gain interest you have to be interesting. Chances are you already give her plenty of things, attention, "love", things of yours that you give without asking anything in return. She gets what she wants, but you dont get what you want. So, show that you are a guy worth dating, she will want you then.

hahah, I do appreciate the advice, but I have done it to her already actually, and what happened was after I tried to get with her she told me because we are "such good friends" I went and moved onto the first girl who came along, and she tripped out, got mad at me and we didn't talk for 5 months, we just recently patched things up and to which she admitted she had feelings for me at the time, BUT, since that time is in a new relationship where she really cares about this guy, so. Sucks for me! :D