Betaed by Ky
Magnus was a very vocal lover – he screamed, cursed, begged, whimpered, moaned. Alec loved hearing the reactions he induced, and he made his mission to exploit every sensitive spot on his warlock's body every time they made love. It was not a problem when they were at Magnus's apartment with soundproofed walls. On the other hand -warding Alec's room at the Institute was the last thing on their minds when the warlock saw the Shadowhunter just out of the training room – sweaty, shirtless and with a tangled mop of dark hair.
Needless to say they would never forget to soundproof the room in the Institute again after Maryse burst into the room and saw them in a very compromising position.