Hey, BF, I have been in love as well, you know! I know how you feel! But I am afraid that makes no difference at all. You can't rule her with your love, and she has to make her own choices.
All you can do is be as good a person as you can to her. Other than that it is out of your hands because you cannot change the way she feels, no matter how much you want to! I am sorry, but that is true. There are no cunning plans or pieces of trickery you can apply to make sure she prefers you over him, or to bring her closer to you, or anything like that.
So it is simple. Keep being the perfect partner for her. That is all you can do.