Alec's on his way to spar when he notices Jace's bedroom door ajar and Jace in a very risky, very personal position. Alec doesn't mean to watch and he knows he shouldn't, but he can't help himself. He thinks he's safe, he's sure Jace doesn't know, but Jace isn't as unobservant as Alec believes him to be. [Pre-City of Bones]

After years of tension and jealousy; Jace and Alec finally give into their need for each other. Yup, it's Jalec... and, of course, it's slash. It's AU, also-just a heads up. Warnings are inside.