But if we started dating...

We're so perfect as friends, you know? I can tell you anything, and you know you can always come to me anytime you need to hear me bitch about work or how ugly I feel. You wouldn't want to ruin a friendship like that just so you could be my boyfriend, and have me look at you with desire and longing in my eyes, if only once—would you? Of course not. Well, if we started dating, it would only complicate this wonderful setup I've got going here.

It's just…you're like my best friend, and I would hate for something you desperately want to change that. I mean, sure, we could go on some dates, maybe mess around a little and finally validate the six years you've spent languishing in this platonic nightmare, but then what? How could we ever go back to the way we were, where I take advantage of your clear attraction to me so I can have someone at my beck and call? That part of our friendship means so much to me.

It's so true.