[ Jack has a temper but it's solely when he's being protective of someone else. If someone was hurting her, he'd knock them through a few walls without thinking about it, but there is no concern that he'll get frustrated by being bad and strike out in a tantrum. He's naturally gentle, so the problem will be more getting him to be fierce as a fighter. She'll find quickly that he has a defensive posture and will struggle with striking first or being aggressive. ]

You look very strong.

[ She looks tough, like she can fight, like she's the warrior she proclaims to be. He can tell in her stance and the way she carries herself. ]

You don't have to worry about ever hurting me at least, all my wounds heal right away.

[ Knives, guns, concussive strikes, he shrugs them off. Dean one time shot him multiple times just to get his attention, knowing it wouldn't hurt for more than a few seconds. He did just go through a great deal of pain when he blew himself into bits, but he was reformed. ]

I've always wanted to learn how to be good at fighting, I figured if I did, I wouldn't have to use my powers.