Stolen By the Berserker by Asa Maria Bradley

The captor became the captive.
He’s an immortal Viking who’s in town to complete a semi-legal weapons deal. She’s the tempting server dishing out delicious pie at the local diner. After one sizzling night, they both think they can just walk away from each other.

But even if Loki’s monsters and the Goddess Freya had not exacerbated the situation, they would both still be very wrong. That one night changed everything.