Ouch...Raven said:Amen. I've been on the receiving end of this before, someone I genuinely considered a close friend through years of school together suddenly came out with this over-emotional declaration of love, and just couldn't accept that I hadn't picked up on his "signs," which I'd always thought were just marks of a close friendship (and I'm not completely clueless when it comes to noticing these things, either). I was taken aback and didn't feel the same way about him, so I tried to let him down gently but honestly. He accused me of stringing him along, and then got into the whole being a jerk when I was interesting in or seeing anyone else phase. When I called him out on it he told me to deal with it, because he saw it as his right to try and stop others from being with me. He pretty much actually said the classic "I don't see why someone else should have you if I can't" line. Obviously I stopped spending time with him.
Thing is, he really wasn't "crazy", as I'm sure some women might assume. He'd just got orders of magnitude too invested in something that was never going to happen. To be honest, I think after all that time it wasn't even me he was "in love with," but some unrealistic, idealised version of me. We were teenagers and I'm sure he's more mature about such things now, but guys: please don't become that guy. (*standard disclaimer that women are perfectly capable of acting like this too*)
I bet once he snapped/snaps out of it, he's going to feel grade A retarded. That must have been infuriating on your end.
Seriously, though from personal experience from being on the receiving end of treatment like that (IE, a jealous individual trying to drive a wedge between me and a then-girlfriend) I took it to heart as a philosophy "if two people are happy together, under no circumstance do you have any right to ruin it". Shame some people just don't get that.