Biting his lip on a moan that would only be more trouble than it's worth, Sean shifts only enough to give her as much access as possible. He feels odd, though, self-conscious and exposed in a way he hasn't felt in a very long time at the attentive scrape of her teeth on his throat. He knows that it's likely just a lingering oversensitivity from being caught unawares back on the station, but his heart starts to race a little, anyway, at odds with the lazy pace they're moving at. At least there's no denying how good it feels, and his fingers curl gently against the nape of her neck, goading her on.