What do you do when you like your boyfriends best friend?

Look inside yourself. (Theorectically of course.) What comes to your mind when you think of your boyfriend's brother? Do you think, "Aw, yeah! He's totally HOT!" or do you think things like, "Awww! My boyfriend's brother is soo sweet!" Of course I am speaking in general terms. If you feel like your feelings for your bf's brother are more lust than love, then it's just best to ignore these feelings, even though they are deep. If it is love, then what kind of love is it? The rest is up to you, but think to yourself, is ditching your boyfriend for his brother worth all the heartache it will cause?