Everything Jack had was a whole hell of a lot, and when he slid his fingers around the back of the Master's neck and closed the distance between them, he did give him everything. There was one moment that was little more than the barest brush of breath and lips, but then there was nothing help back.
The slick slide and press of his tongue, catch of his teeth that was just careful enough to tug instead of sting, and every once of emotion and energy he had. Frustration, desire, love, want, need, exhaustion, and under it all, all that endless life. Asked for everything he's got - as much dare as demand - and he was giving it.