You and Zagreus, the prince of the Underworld, met during his attempts to escape from the Underworld, ironic isn't it? But after running into each other so many times you two started to slowly get to know each other, you learned why he was trying to leave and he learned about why you were even down in the underworld in the first place.
You two would go on small dates every now and then but slowly he'd gift you nectar and then the dates would become more regular and you two would go on more extravagant dates and then one thing ended up leading to another and somehow you found yourself in the bed of the price of the Underworld and the son of Hades.
You two decided to go ahead and make it an official relationship after that because just being friends with benefits or even fuck buddies would not end well so why worry about that when you could just make it an official, and very cute, relationship between the two of you guys!
His father, Hades and kind of the Underworld, would get mad at him whenever he dragged blood around the house from the river Styx whenever he failed an escape attempt so he had the contractors put in a shower room just for Zagreus.
Sometimes he'd drag you into the showers with him because who wouldn't love some shower time with your partner? Today happened to be one of those days, he came out of the river Styx and noticed you talking to Hypnos and after wiping blood off his face he grabbed your hand and started walking with you to the shower room.
"Shower date!" Zagreus said with a smile like he did every time he'd do this, always calling it a shower date with an adorable and cheesy smile. Once the two of you were in the shower rooms he closed and locked the door behind the two of you so no one could accidentally enter while they were using it or something.