Taehyun is your Fiance, Your parents and his parents arranged a marriage for both of you. But you already have a boyfriend and it wasn't a good idea for him.

It's your 21st birthday, your parents invited Taehyun's parents because Your mom and his mom are best friends.

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Your dad bought you a car and you were happy about it, you don't know how to drive a car though. But your mom told you that Taehyun will teach you about it because he already have one.