Kirk followed the tug of Jack's fingers, humming when he met his lips. Lazily he slid his tongue against Jack's, really taking his time to taste him, to feel the way his mouth fit against Jack's. His fingers drew slow circles across Jack's chest, idly brushing around his nipples.
"Promises, promises," he whispered, smiling against Jack's kiss as he pushed down with his hips, rocking his cock against Jack's stomach. If Jack had any doubts of Kirk's interest, those should be cleared away right then, especially with the warm gasp to accompany it.