The 'babe' just sort of happened, without Gladio even thinking about it. He doesn't use that kind of pet name any where else, so at least John doesn't have to worry about it outside of the bedroom. As Gladio comes further out of his post-orgasm bliss, he starts to rock back against John, giving him something more to move with, their bodies syncing up through instinct and the feeling from the Bond. Gladio's hyper-aware of the feeling, almost overwhelming like trying to stroke his cock right now when it would be too damn much, but he's not complaining. It feels incredible in his mind, as much as John does against his body.

"Wanna feel you come," Gladio murmurs, his mouth finding the Bonding mark and sucking gently against it, threatening his teeth but not biting, not yet. He can taste John against his tongue, something soothing and warm and enveloping... huh. It takes a moment of concentration, but John will pick it up immediately as Gladio's own scent grows significantly stronger, brighter and sharper, as he bothers to force some produce without something in the room that would normally trigger the dominating effect.