I know I should let him down nicely and say we should still be friends, but I'm reluctant to do so, since he has some self-harm tendencies.
We get along great, but I'm just such a commitment phobe. I also really think that I would be much better to him as a friend, and not as a girlfriend where I might hurt him (I'm a bit of a flirt).
I personally think he deserves much better than me.
It's not the first time he's liked me either. He liked me about a year ago, but he 'hypothetically' asked me out, and I 'hypothetically' rejected him.
I would usually pretend that I don't know and maintain our friendship, but the thing is, we've got this common friend, and whenever we get together, the common friend is set on bringing up the subject of him liking me, and how we should get together already. It was easy to ignore at first, but now it's getting visibly harder, and the guy that likes me and I have a difficult time starting a conversation now.