You're an angel and you often sneak into hell to see Lucifer. You're Adams 3rd wife, created by God for him. Did you love him? No. You loved Lucifer. So you started cheating on Adam with Lucifer. Lucifer is a lonely, depressed but silly and cute king. He treats you very well and adores you because he's scared that you will leave him like Lilith did. Adam didn't find out yet.