My secret wish

Me and my boyfriend of 5 years have great sex all the time but i have only slept with 3 people including him and he was there for the others because we had 3 somes. Well i will get to the point he has this one friend that i want so badly to sleep with! last night we where at his house and all i could think about was sucking on his cock and having him cum on my face! I think he knows that i have a major crush on him and that i want him but i think that he doesn't act on it because of my boyfriend. They have been friends for a long time! and i dont want to mess there friendship up but i want him so bad! do you think i should act on my feelings or just keep dreaming about it ever night?