Declan's no teenager and he can last, normally, but Kate's too bloody good at what she does for him to have the patience of a monk with her. He doesn't want to, either, and he snaps his hips up sharply in response to her sucking.

"Close, love. Figure you're swallowing, yeah?" He doesn't expect a response, considering she's occupied, but if she doesn't feel like swallowing, there's her warning to pull off.