Gracie's body language suggests that she's okay with the fact that he's pulled her onto his lap like that and Cisco takes it as a good thing. He's certainly not going to complain, anyway, that she's touching him sort of affectionately because he likes it. A lot. A lot.

"Completely safe and private," he agrees, eyelids drooping just slightly as he wets his lips and looks at her mouth for a moment before looking back at her eyes. "I think it's kind of perfect, too," he adds and, before he can second guess himself, Cisco leans forward a little to kiss her.

It's chaste and soft; testing the waters, but he doesn't pull all the way away again when he parts from her. Cisco just sort of hovers close in case she feels so inclined to return the kiss and holy crap he wants her to.