He had sort of overstepped or rushed things a little over ten years ago when he had assumed Obito meant for their kiss to be on the lips. But that tightening in his hair wasn't a 'no,' Gai thought, and Obito had plenty of time to object to Gai's hand, if he was going to, when the kiss broke off. He wouldn't go back to kissing if he objected!

For the moment, however, his hand just kneaded gently against the robes and Obito's firm abdomen, taking his time feeling him. Gai hadn't exactly walked in planning to seduce him or anything (if that was even what he was attempting to do now! Gai wasn't sure himself) so he had no idea how to go about it, but plans and forethought were never Gai's strongest skill--action was. And so, he pulled back from the kiss and watched Obito's reaction through his lashes as his hand moved down Obito's stomach and on his lap.

This was not something to be done in the Hokage's office, Gai was sure of it, but at the moment, as his hand rubbed Obito's groin through the robes, he was very intrigued by the possibility.