Two months, and they'd only talked about actually having sex a total of three times, and always in a vague way that suggested such a thing was a distant possibility. Now, Regulus was offering what Severus had only been very privately obsessing about for the last three weeks.
For once, his body seemed to be acting in accordance with his mind, because his cock throbbed against his lower abdomen while his stomach twisted itself into a tangled knot of apprehension.
"Are you sure?" Severus asked quietly, but his fingers were already tracing the other boy's entrance and he couldn't quite bring himself to look away.