Disclaimer: I own nothing.
Warning: disturbing dark themes, blood, gore. Celebrimbor making bad life decisions. Slash.
You hurt him, slashed red lines across his pristine white skin, painted the rough stone floor with red, red drops like ruby jewels, tearing his tendons from his well formed body, where you'd kissed softly a thousand times under the starlight,…his muffled screams and cries couldn't assuage the scorching rage burning in your chest, for not loving you enough to help you, for loving his family more.
So you beat and hurt him more until he is broken, until he realized he is a traitor and crawls back to beg for your forgiveness and proclaims his devotions with broken breaths.
You burn his mind so he could only think of you and you only, not his grandfather, Finrod with his golden curls, nor that accursed Gil-Galad. You burn his beautiful bright eyes so he could only look at you, and no others. You always hated sharing.
You etch your many names slowly and lovingly on the muscled chest where his traitorous beating heart thumped weakly – Mairon, Sauron Gorthaur, Aulendil, Artano…so he knows the true you, and there is no more pretense.
Still you're generous, still you're magnanimous in your gift giving…you have slipped that burning gold ring you made for him to the third finger on his limp left hand, ignoring the smell of the searing flesh, then whisper to his delicate ear that this is the last and most gracious gift to him, a token of the eternal bond between you and him, as his fea is being summoned by Namo to the Halls, that a separation such as this is only a brief respite in the endless eternity you both shared, and you will be claiming him when you triumphed. O how wonderful he is so constrained by the Eldar Laws that the breaking of the flesh doesn't break the bond of the fea. Nothing breaks the bond.
But…before he flees completely to the grey dark Halls of death and doom weeping with the guilt of his betrayal, you bite into his flesh with your wolfish teeth, consume it to keep a piece of his fea within you, so he will reach the Halls knowing he will never escape you.
Then you hung his broken fealess body onto your standard, so everyone will know he belongs to you.