[ He should thank his lucky stars that glimpses is all she's gotten — the way he gets off on violence, on bloodshed and mayhem and other people dying, it's not something he expects her to accept let alone see as something worthy of her affections. He knows, perhaps a little too well, that she's too good for him. Too human, too compassionate and right now that becomes the target for his pent up frustrations.
He is frustrated. She's great but he's frustrated. First the chip and now the need to lay low, to keep quiet, not make too much of a ruckus because there are no sewers to hide in here, no highways that'll take you the hell out of Dodge when the going gets a little too tough for his liking. You can only keep a wild animal in a cage for so long and he is definitely that — an animal. Soulless. Brutal. Frustrated beyond belief and it leaks out into the whiplash nature of his thrusts, the growl between gritted fangs. ]