You were Zeus and Dione's daughter, Aphrodite's sister, goddess of life qnd death. People started to say that you were more more powerfull than Zeus and since you were nice you would be a better queen on the kings. Consumed by jealousy Zeus took your ability to control the leaving leaving you only to be the goddess of Death. But that was enough he needed you away and whats the farest place from land and Olimpia? The underworld. But in order for Hades to let you in you would have to be his wife. Even tho your mom protested he didn't changed his decision, you honestly didn't cared he was the only god that seemed like a gentleman. You got married and were now about to sleep.