Well this is a complete crock of shit. having muscle doesn't automatically make you attractive to the girl of your dreams. If it were this easy, most people would be motivated to do this a little more often. I think you're just making it up as you go here consistency.
As for this, giving someone hope in a hopeless situation is just as bad as telling them the truth in the harshest possible terms. Sure, there are situations when friends do turn into relationships, but that doesn't happen often enough to provide anyone hope of it actually happening. Why not just tell him to buy some lottery tickets with the same numbers over and over, and maybe he'll eventually win?
tomasll, you have it right, ignore her, don't talk to her, don't think about her. Find someone who will appreciate you and let this one go.