A/N: This is the sequel to Erised. It is not required reading but will probably help.

….

Remus rather fancies he already knows his deepest desires. They are simple, clichéd things that he holds deep in his heart for the entire world to see – to not be a werewolf, to be able to fly a broom without hitting trees, buildings and people in the progress and to be liked, above all things he wants to be liked.
Remus is sure he knows himself through and through but still his heart thrills when James tells him about the mirror. Putting pictures, life-like copies of himself, to the half-known and almost acknowledged fantasies feels immoral, wrong and Remus wants it because it is so.

He passes Sirius, red-faced and gaping mouthed, on his way to experience the forbidden and knows it will be good, excellent, because of Sirius reaction.
Sirius, noise, uncalculated, unshakable is his benchmark for life – if Sirius is so flushed by it Remus may have a heart attack.

The mirror as he approaches it ripples slightly and then he sees his reflection.
The moon, a full imitation that makes him shrink back slightly because it is still the moon, appears behind the him-boy of his reflection who smiles and nods to it as if it where an old friend. Remus thinks this desire cruel; he banishes it for he no longer wants it when the mirrors depiction of it hurts him so much.

The moon vanishes and is replaced by Sirius who grins back at him and Remus warms to this new desire but then Sirius steps forward, cups the reflection's face and, Oh Merlin! Remus is sure this is wrong. The mirror Sirius is kissing him, touching him with a gentleness Remus begins to envision is on his skin and a blush spreads over his face, the tips of his ears burning red, but he cannot look away.
Slowly, forgetting he is in an unlocked room known to probably all the way James talks, he licks his fingers and slips one hand down into his trousers.

The door opens.
Remus does not hear it, too caught up in the motion, and for one moment he is outlined gloriously – head thrown back, cheeks tinged pink, mouth open gasping for breath.
Gasping for something, something unintelligible and almost palatable that he needs like air and food, a first taste addiction he is now enslaved too.
"Sirius." Remus moans, hand moving faster and his desire steps forth from the mirror, becomes whole and mortal and kisses him.

Remus opens his eyes, cries out startled into the kiss and pulls away only to be caught palm to palm while Sirius, the real, living, breathing Sirius smiles knowingly at him.
In the mirror the reflections twist around each other, kissing and biting and holding, taking and touching each other and Remus wants them to stop, wants to scream at them but they can't hear him, only Sirius who now holds him tightly as if he fears Remus might vanish can hear him.
"Sirius, I…"
"Hot blood begets hot thoughts, hot thoughts beget hot deeds, and hot deeds is love" Sirius mutters against his mouth and Remus, embarrassed, frightened and delighted, consents.

They move together, inexperienced and hurried, grasping and arching into each other. The floor is cold and hard beneath them but Remus does not care, Sirius nestles between his legs and they rock together hastily taking warmth from each other, taking love. It is over far too soon and they sprawl out, laughing and breathless, before the mirror to watch their reflections but to Remus surprise all he sees is himself, dishevelled and flushed lying with the equally dishevelled Sirius. There is no movement from within until Sirius stretches beside him and the mirror copies the motion. Remus does not dwell upon that, does not want to read deeply into it and so instead he kisses Sirius and tempts him away with the promise of inviting beds and soft touches.

He does not look upon the mirror again, he does not need to.