well ... I mean there's a duty of care involved .... people are
placing their hearts in your hands after all ... whether you want
it or not ... it's something precious and fragile from someone
..... 
and it's not that I don't "like" her or anything .... just that
well. .. I dunno what to make of it ... as I said ... I drink too
much, I smoke, I have man boobs and a beer gut, I'm balding ....

makes you wonder if there's lunacy involved ... 
Let's just say this....
A few years ago, a girl confessed that she liked me. And she was
one stone-cold stunner of a minah.... how could she fall for a dork
like me?
The thing is, I had to (politely) turn her down, because:
1. I wasn't interested in her, at least not more than a
friend.
2. She had just broken off a difficult and abusive relationship
with a serial cheater and perpetual DB inmate (for going AWOL
repeatedly). I certainly doubted her ability to have another
relationship so soon (within days of the breakup!)
She took it well at first, and accepted my point that we could
remain as friends. Then she abruptly cut off all contact from
me.
Did I hurt her heart? Probably. But if I had pursued the
relationship, dollars to donuts say that the repercussions would
have been much worse.