how can i Win this girls heart

I'm not here to hear "move on" or "there will be other people" or anything about why to give up on here. So I'm 15 and so is she this girl means everything to me i like who she is and it wouldn't be the same if i wasn't with
her recently she started dating my friend again and like i said i don't want you to tell me there will be other
people I know that but I want her and no one else now i was wondering the fallowing only answer what you
know

A.) how to make here like me more than my friend
B.) how long might there relationship last
C.) how can i just win her heart in general

please i really need help

Just because im 15 doesn't mean you shouldn't help me I have just the same girl problems as everyone else

You don't want the only real advice there is to give. There is no magic way to win someone's heart or determine how long a relationship will last, it just doesn't work like that.

You're here for a certain answer, and that isn't how it works. Sorry bro, "move on" and "there WILL be other people". She is dating your friend, what kind of jerk would steal a girl from their friend? Do you want to be that guy?

im am here for one answer let it be what i want to here or not