"With what you-?" Gamzee starts, then stops, as he thinks about it. It's become second nature to assume Tavros isn't into him, and so he'd been thinking that maybe the smaller boy was willing to try because he didn't want to hurt the Slytherin's feelings. But looked at in a different light ...

He beams suddenly, huge and happy, and not caring even a little that they're in a public place, he ducks his head and kisses Tavros square on the lips.