It was most definitely going to be the last time Harry ever tried to do something nice for a Slytherin. Ever. Which was what he'd told Hermione when she'd talked about the importance of rules. Rule number one, never be nice to Slytherins.
To say things were tense was an understatement. Regulus and Remus were obviously not talking, he and Remus weren't really talking either at the moment though it was mostly because Remus had been faking sleep and Regulus was there. He hoped that would change once Regulus was out of the cell.
Until that happened he kept quiet too, talking to those who came to see him (Ginny had been pissed off, but other than glaring daggers at the lot of them, she'd refrain from yelling.)
At the moment he was sitting in a chair watching Remus throw daggers at the floor, willing time to pass more quickly. The sooner this was over, the better, because this not speaking was getting ridiculous.