Jin Woo is a jokester with a sharp tongue once people get to know him. Though, it only takes half of a conversation to get to know Jin Woo and for him to be comfortable around most people; no one is sure if this is a good thing or a bad thing, yet. He's friendly and easy to get along with, even if he can be a bit loud and sometimes overbearing. He can sometimes seem like he's bored or uninterested, but only because he has a short attention span. He's a bit lazy at times, but does pull his weight in the group.
As an idol, Jin Woo is fun to be around and treats each individual fan with respect, yet also as if he's known them forever. He has an excellent memory and if a fan has shown up before, he'll remember them. On stage, he's fierce and fits his 'Dark Prince' persona, but on camera or just in public or around fans he's the friendliest person, with a bit of harmless pranking on the side.
As a significant other, Jin Woo calms down a bit and people can see that he truly loves his girlfriend. She helps him be more levelheaded and those around are usually glad for it. He shows a softer side, a more loving and caring side.

Jin Woo was born as the only child of rich parents. He was healthy as could be growing up, and he was smart as a whip despite the lack of motivation to participate in school. He liked sports for a few years, before a new girl moved to town, Lillian Louise Lee.
She was the first thing to pique his interest since they had told him he could play soccer and baseball. She had an accent he couldn't place, and it amused him. He protected her from bullies and they became the best of friends.
When he was ten, his parents almost went through a divorce, but managed to stay together due to counseling and renewing their vows. Through the years he experience much heartbreak, including break-ups and his grandmother passing away. Lilou was there with him the entire time. She was a shoulder to cry on, an ear to listen, and a friend to just be there.
When Lilou and Jin Woo were eighteen, just after graduating high school, they took a trip to the United States before they had planned on going to university. They got matching tattoos and entered a dance competition just for fun. They enjoyed the dancing and the adrenaline so much that they made a pact.
When they returned home, they would accompany each other to auditions, and if they failed the auditions they would go to university. They kept their pact, and were both accepted to the same company.
On Lilou's nineteenth birthday - also Valentine's day - after almost twelve years of being best friends, Jin Woo asked Lilou to be his girlfriend. They've been happy and stable ever since. Both families approve of them being together and are just waiting for an engagement, a wedding, and then grandchildren. The families understand them putting their careers first, but still pick at the both of them.
After since years of being together, Jin Woo plans on proposing before the year is over.

Mother | Nam Yoo Hyun | 59
Father | Nam Ji Young | 65
 

Lilou is the more mature out of the two. She's kind and respectful and keeps him in check. She acts older than she is, but still manages to have fun and loosen up sometimes. She's has strong maternal instincts, and takes care of everyone around her before worrying about herself.

On the surface, it seems as if the two are opposites, but really it works. Lilou keeps Jin Woo grounded, and Jin Woo helps Lilou open up and have fun and be comfortable. They're basically perfect for each other. Jin Woo is protective of her in public and stays near her at all times. They've been together since they were trainees, so they've never felt the need to keep their relationship a secret.
Having been bes friends since they were seven years old, they usually don't even need words to communicate with each other, which confuses some people, but amuses Lilou and Jin Woo. They're very close and very cute. They try to keep their displays of affection private, but sometimes they'll kiss or curl up against each other when people are around.
Netizens have tried to start many rumours that the two are expecting a child, but none of them have been true. Yet.