It Ian a bit to close and he finds he's trembling. A few deep breaths, a determined focus to pay attention to the sweet sentiment of Jack's words rather than the dark turn his thoughts have taken and he's more or less alright again. He even manages a faint smile.
"I'm glad you think that. I'm glad we've made it this far." Now kiss me until I can't think about anything but how much I love you remains unsaid but very much apparent.