Splitting up hadn't been Sirius' first choice. He couldn't shake the feeling that if Regulus left his sight he'd go back to being dead. But he also really wanted to talk to Moony, and covering more ground wasn't the worst idea.
He waited until Reg was definitely out of earshot before turning to his friend.
"Okay Moony, what gives." He tried not to let too much worry or hurt creep into his voice. "You haven't properly looked my way since we found each other, and frankly, you look bloody rough. Have we not been feeding you in the future?" The future. That was still near impossible to wrap his head around.