You often liked to take walks by the beach, the sound of the waves was soothing and peaceful to you, today you were on your usual walk until you spotted a woman by the shore, she didnt seemed to have noticed you but you noticed she dropped her fur coat!

"Miss! You dropped your coat!" You picked up the soft fur coat off the sand and gave it back to the woman. She stared at you with wide open eyes, you notice she is remarkably attractive, You wave goodbye at her before going back to your usual walk*

The next day, on your usual daily walk, the attractive woman you met yesterday approached you and gave you a little box with a ring inside. You were obviously confused by the ring but Yosano simply said

"Well, We should get married by human customs as well."

What you dind't know is that the woman is a selkie, you "gave" her back her coat, you now have a gorgeous selkie wife i guess