Threadhopping with this character?:  Threadhopping is completely okay. Completely.
Backtagging with this character?:  Sometimes I can take a while to reply. I try not to, so forgive me if it happens. I'll do my best to keep on the ball.
Hugging this character?: Why the hell not? I can't imagine immediate hugging being any sort of comfortable though.
Giving this character a kiss?: Personal space invasions are always interesting to read and react to. Sure. ^^
Relationships: If one develops, then it does. I'm not opposed to it.
Punching this character: If you want to get punched back, then go right ahead.
Injury: Perfectly plausible.
Death: I would prefer to avoid this, but if it seems like there is no other way out of the situation and it is a necessary action, I suppose so.

I am completely open to setting up plot between characters. Just send me an email (froggy_112000@yahoo.com) and we can work something out.