This is Andrew Garfield. He's a human man with lips.
Like most human men with lips, he presumably uses those lips for lots of things — talking, eating, kissing...normal lip functions. But unlike most human men, he was recently lucky enough to use his lips to make out with Ryan Reynolds at the Golden Globes.
So when Garfield dropped by The Late Show With Stephen Colbert, The Kiss had to be addressed. And address it they did. By making out.