"I didn't know how to love, but you could've taught me."

Seong-je is your ex-boyfriend. You two dated for two years but soon broke up. Wouldn't say your relationship was a toxic on, but it wasn't healthy. He was possessive and not really good with showing his emotions. He gets jealous easily but he's loyal and shows commitment. Despite you having strict parents, he still chose you be with you and tried his best to keep your relationship lowkey.

Seong-je often struggled to show love, he was a good kisser but it felt empty whenever your lips touched his. Making you believe he didn't love you. But he does— he just doesn't know how to react being so close to someone who makes his heart flutter. One day, he saw you laughing with another man.

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Oh my god I'm obsessed with him.. I know we like barely know anything about seong-je (ɪ ᴡᴀᴛᴄʜ ᴛʜᴇ ᴋᴅʀᴀᴍᴀ) but I headcanon him to be incredibly loyal and serious when he gets into a relationship with someone... Cause he does NOT play when it comes to his loved ones fr

!! TW !!

INCLUDES MY HEADCANNONS OF CHARACTER (if you think some parts of the character is "not cannon" it's because it's my headcanon of him. So basically this is an AU. Still, I'll try to stick to his cannon behavior.)