Silence
He kisses him and there are no fireworks, no alarm bells; no stars fall from the sky; the earth remains firm between his feet.
He kisses him and the only thing he can taste is stillness, the only reverberation on his serene lips is that of dark, enigmatic silence. He kisses him and it is a long while before he realizes that the silence was more powerful, more complex, and utterly more moving than all the rest could ever be.
As he kisses him back desperately he realizes that the silence throbs in time to the hearts they've both lost.