Yes, that's Too Soon, and Bruce's small growl against his mouth punctuates that fact. (Wasn't kidding, about how scared he'd been, still is to some degree-- how he's kissing Clark now is a show of restraint, because he wants it to be rougher, wants to hold him viciously close and feel how alive he is--)

He switches modes so fast between affectionate and distantly professional it's almost dizzying, pulling back and leaving just a bracing hand at his side.

Guilt pants him. He'd just been telling himself not to do this, wasn't he? You're an asshole, Wayne. His attention, fixated on Clark, can't help but skitter briefly to the readouts, paranoid.

"What is it?"