IMO, it seems, since he was shot, he has 'changed' - as Calleigh said.
He IS differnt, softer, more hesitant. I suppsoe that's also to do with the fact he's lost so much; Speed his sister, and now he almost lost his own life. That's opened his eyes big time. Near death experiences will do that to you.
He's grown up alot throughout the seasons, and I credit Adam for showing us that. Many would simply let the writing show it, but Adam went above and beyond. An excellent actor.