Why do I feel this way??

I look at you each and every day,
I talk to you as always.
But I can't help to feel the guilt,
For the feelings I have for you.
I's so hard to keep the friendship,
Sometimes I just want to stop it completely.
But I know that will hurt even more,
But maybe its worth it.
Your already in love with my best friend,
And her in love with you.
I can't hurt either of you,
But it's tearing me up completely.
I can literally feel my heart being tugged at,
I'd do anything to loose these feelings,
And only love you as a friend.
But I love you more than that and I'm sorry.