Girl Next Door answers
Don't make it about letting her down easy as much as helping her save face. Start by pulling back. It's possible that a few unreturned phone calls or a moratorium on bear hugs is all it'll take to show her you don't share her feelings. But it's also possible she'll think you're clueless and decide to make her intentions more obvious. That's when you tell her she's great/funny/sexy as hell but you just don't feel a sexual spark. Focusing on the lack of chemistry will make it easier for her to accept the news. And if she starts to laugh and says you completely misread her, then laugh, too. Allow her to keep her dignity.
