I'm in love with my friend's boyfriend
What do you think caused you to be in love with him?
There are many reasons really. He does things with me that i like and he always wants me to be happy.
It's great you're in love, but you shouldn't home wreck. They are in a happy relationship and you have no right to break them apart for your selfish desires. That only causes a lot of despair and betrayal to your friend.
Is this what love is, giving up on a dream just to keep a friend?
It is a bad idea to go after your friends partner. Your friend would probably have a pretty tough time finding out that their friend wants to take their boyfriend.