Desire for what i can't have

Me and this guy have to hide our feelings everyday becasue he is dating my friend and we are all on the same swim team..it is really hard knowing you cannot have what you want

I see you with that girl
The one I call my friend
She is happy with you
If she only knew
I see you with me
I call you my friend
I want to be more than friends
If she only knew
You see me with another guy
You know he is just a friend
You are happier with me and
I am happier with you
If she only knew
That you want me and I want you