these guys are right - the best thing to do is walk away. I know you want to remain friends so badly, but the feelings will still be there. You'll end up getting hurt again and again. It's better to walk away - try to involve yourself in activities where you won't see her (I know this might be difficult, but perhaps you should find an alternate hobby). Just my two cent worth from a guy who's gone through this situation in the past. Here's a feeble analogy for you... Removing a bandaid hurts more if you try to take it off slowly, but if you rip it off... the pain is there, but it is over much quicker.