Frank feels Gerard's smile and nibbles a little at his lips to gain reentrance. This is so new, he's not sure what to do with it. He's never had this before--smiles and laughter instead of just gritted teeth and sweat. Never had what you'd call a "boyfriend," and he isn't sure if that's what this is. But he doesn't have enough functioning brain cells to think of that now, because Gerard is pressed tight against his stomach.