Ocean Apocalypse: Hooked on My Undead Bride

Nate and his girlfriend had been together since before the world ended and the sea came up over it. Everyone alive moved into an age of seafaring, and everyone woke a fishing system. Nate's worked differently from the rest, and people settled on calling him useless for it. His girlfriend went along with them. He stayed out at sea for a month, fishing, to pay for a present she had said she wanted. On the day he brought it to her he found her with the son of a rich family. She showed no regret about it, and the two of them mocked him where other people could hear. Nate gave up on her after that and put his time into preparing for the seafaring examination. What he pulled up during it was a coffin a thousand years old with a woman's body inside. She woke, and the first word she said to him was "Hubby."