That hand only stills as the kiss collides with him, takes over his attention utterly, because he needs to focus on nothing else. That low rumble in his chest rises a little, the passion of it making his heart beat harder, a little faster, and he returns the kiss with just as much desperation. He won't even consider words until Jacobi needs to breathe and the kiss breaks.

"I suffer without you. Every time."

Then Jacobi's being kissed in return, that same bruising intensity, the hand that had been working on his underwear gripping his hip hard enough to leave marks.