Jack really doesn’t give a toss who’s watching when he blows Ianto, but he has learned the hard way what people of this time will accept - outside of a sex club, at least. He’s not even trying to conceal the full-blooded shudder Ianto’s suggestion (command?) sends through his body, though, nor the soft groan that gets wrenched from his lips. Jack’s not the only one, after all, who has a way with words.
He’s half-minded to ask, after his last comment got Ianto so hot, if Ianto would like him to crawl to the bedroom, but he almost thinks Ianto might take him up on it and however submissive he’s feeling, he needs to be a bit further under before he’s actually okay with crawling for someone. So instead he reluctantly disentangles himself from Ianto and nods towards the bedroom. “Let’s go, then!”