I'm pretty sure he would be. [Then again, he'd never really forgotten Ianto's drunken text that one time. But, it's most definitely not something to bring up now. He leads Jack to the lift.] Either that, or completely baffled, which, admittedly, is something he does really well, but still. He's not the priority right now.

[Well... Ianto is Sulu's priority, always, but Jack's the one who has to help make things right, so in a way, Jack is what'll make Ianto happy and Sulu has to help Jack do that. Which involves sleeping. ...It's a complicated situation.]