wait there's a k-drama i need help identifying.

something about a beach/resort. at the end there is a marriage between the girl's mom and someone else. the main lead lost his mom but she ended up having a restaurant on the beach.

wait i remember they slept together in his car on the beach, when he woke up he was naked and the ahjummas are laughing at him.

figured it out, t'was my secret romance