"More sleepovers?" Harry tilted his head questioningly, not so much because he didn't understand (it was sleepovers. Between two grown adults. The implication was pretty obvious - and there was a warm little flop in the pit of his stomach at this, something akin to the butterflies everyone talked about but more...visceral - so he would have had to have been a complete idiot to miss it) as to double check that he'd heard him correctly. He'd sort of managed to dismiss the whole thing as some kind of mother hen urge, a strange need of Tim's to play nursemaid for the first poor soul he'd come across (he'd met people with stranger fixations), but now that he was expressing interest in future repeats of this (hopefully not due to one of his episodes next time) Harry started to wonder if maybe there was something more behind it.
He squeezed Tim's hand back, conveying that he really wasn't opposed to the idea if it was in fact what he was proposing. Tim had kissed him, after all. At least, he was pretty sure that part was real. ...Based on some of the other stuff going on he was fairly convinced he hadn't made that part up. "...It's only sometimes," he added as eleboration. "When I forget. They talk a lot, but usually I'm better about not answering out loud."