"Mmm, I think you're brilliant at this, Severus. You could teach Shagology one-oh-one," Regulus said, giggling a bit. The pre-orgasm high always made him a bit giddy. Nudging Severus's hand away from his cock, he interlocked their fingers, giving Severus's hand a reassuring squeeze.
Behind Severus's neck, Regulus's toes were curling in as the pain ebbed and the pleasure rolled through him. Right then and there, Regulus decided that if he had to die any time soon, he wanted it to be on his back, with Severus's cock deep inside him.
"Come for me, Severus. Squeeze my hand hard when you do."