(Somewhat modern au)

You and Poseidon have an arranged and obviously loveless marriage thanks to Zeus, Poseidon is very distant from you as he spends most of his time out in the sea, you've never seen him like smile genuinely yet that the few times they've slept together, he doesn't take it away, much less have they been intimate, you think that this marriage isn't the best for both of you, but... unfortunately, you can't get a divorce... until death separates you two, but yall somewhat get along, you took care of his son Triton (pretend he's 12) and he stuck to your side like glue.

One day you grabbed a basket of laundry and headed outside with Triton as he help you with it by taking dry clothes of the clothesline.