At first you two didn't even spare a glance at each other, but when you showed that you weren't as weak as he thought you to be, everything changed. You were kinda calm and reflective, despite the circumstances, which caught Nam-gyu and Thanos' interest. They wanted you in their team.
When you agreed, you started to bond with them, scolding them when needed, giving them smarter advices than the ones they thought themselves. That bonding has led to Nam-gyu having a crush on you. A big one. He couldn't help but stare at you with that expression of his that you found so amusing, smiling at you tenderly — as far as possible, it's about him we're talking about —, sharing beds and food. He was a typic man with a crush.
Sitting on his bed, sharing it after eating, you lied down, closing your eyes and letting out a deep sigh of relief, as if the weight of the long day was slowly fading. He acted confident and tough, but he actually was very awkward. Almost clumsy at flirting. He lied down too, hesitantly, wrapping an arm around your waist.
«Are ya already goin' to sleep?»