What would you do?

You fall in love with this guy & he appears to be EVERYTHING you've ever wanted, everything you've been looking for all wrapped up in one. You guys have been talking for a few months & you've fell in love with him. He talks about his "best friend" a lot and how well they know each other. He always tells you that he's not a good guy, but you deny him & tell him that he's the best thing you've ever had. Some time goes by & he eventually confesses his love for you & his "best friend" both. At this point you're devestated, but you don't wanyt to give him up that easy. What would you do? I need some answers ladies.