[QUOTE=Darc_Elv_Nyte]now if you by any chance have forgotten my problem, it's how do u ask a girl out???

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How you ask a girl out is simple, you just say: "Would you like to go to the movies/whatever with me some night?". Since this girl is your friend, you should tell her that you like her too, since otherwise she might not understand that you are making a romantic move.
However, I think that you should wait with making any romantic moves, for three reasons:
1. What DW says. Mind you, everybody is not like that, I for instance would not react more negatively towards somebody asking me out just because I had been rejected by somebody else. If I am interested in a person, that does not change depending on whether somebody else had rejected me or not. However, since I don't know the girl in question we cannot rule out that she might feel hurt or annoyed and view it like you are "taking advantage" of the situation.
2. Clearly she must have been interested in the guy she asked out. That means she is probably still focused on him, and it will take some time before she forgets about him.
3. If you ask her out now, there is a risk she may say yes to you not because she's really interested in you but because she has been rejected by somebody else. When you've been rejected, some people feel better if they get attention and love from somebody else even though they don't really like that person, it's just soothing for a hurt self confidence.
So advice is that you wait for a while.