Jongwoo:

"I am NOT a babygirl!" he argued while the babygirliest pout; arms crossed and resisting a foot stomp like some toddler. But you kept insisting so his mixed frown-pout turned to a sulk but then he laughed, "I am NOT," he dropped his arms, not even fighting it anymore.

Fine, he is babygirl. But only for you.

Moonjo:

He didn't get it... So confusion but amusement. He had to ask Jongwoo at their evening rooftop drink sesh, "What's babygirl?" "Huh? Euh... it's like-" followed by Jongwoo explaining it very awkwardly. Moonjo listened, eyes narrowed; unsure if he likes it or not.

In the end he did, as it felt as if you were being possessive over him.

Junghwa:

"Noooo!" It twisted her insides. So cringy! Give her a cute nickname, not one that sounds as if a condescending jerk who does not see women as equal is calling her.

She's also not a 'baby' or 'girl', she worked very hard to become a proper woman so give her credit. Something like 'my lady' would be more appreciated.