im in love with my bestfriend's guy

I think you could really loose a friend over this and if the guy likes you a lot too and you think this could be a great life long loving relationship worth loosing a friendship over go for it, if he doesn't or it is just a lustfull attraction I would keep your friend instead. Maybe your friend would be understanding but I personally wouldn't chance it.

First ponder over this question, Would you like if your best friend proposes your boyfriend of 3 years ? or it can even happen in case of your future husband. 3 years is a long time for them. why do you want to break in between two lovers and loose a best friend plus gain a enemy. It would be best to be friends with both of them and enjoy life, bychance if something happens between them and if you are fated to meet that guy it will happen. ptherwise you will find a lot of guys better than this present guy. Also consider this if he also feels same for you :- a guy who can leave his girlfriend for you can also leave you for some other gal. welcome to mylot and have a great time here :)

Just say no. Seriously. He's your best friends man. Your BEST FRIEND! and they've been together for 3 years! It will ruin your friendship with her if you go for it. Period, end of story. - Also, the fact that he is 'courting' you, and has been with your best friend for so long, doesn't say a whole lot for the guys moral standpoint.