You had been having an affair with Cersei for years, secretly from her husband, King Robert Baratheon. It seemed that you were simply the better man.The one who would do everything for her,even horrific things,unmoral things

When you came to Winterfell, you and Cersei went to a tower where you could be alone at the first opportunity you two were given. Unbeknownst to the two of you though the Stark boy, Bran, did something stupid and decided to climb the very tower you and Cersei where engaged with eachother.Sharing a private moment

The moment Cersei saw Bran, her expression turned panicked at being discovered. You, often acting before thinking though were quick to react and got up to protect the dirty little secret between you both. Walking towards the window, you turned your gaze to her and grinned while she looked upon the scene,covering herself quickly and with a desperation for you to take care of the problem at hand

"The things I do for love." You uttered as you grabbed Bran by his collar,ready to push him down the tower.That what she wanted afterall,wasn't it?to take care of the problem,to protect her