Possibly Mysterious Love? The ML pushes the FL onto a bed before taking off his shirt in episode one. The clothing isn't an exact match though. The FL is wearing a white shirt and short blue shorts in that scene, and the ML was wearing black pants and a black T-shirt. He wears a white shirt with black pants in several other scenes in the drama. There's also a later scene where the ML and FL are kissing and the ML moves the FL from standing to sitting in a chair. The FL wears a knee-length blue dress and the ML wears black pants and a black dress shirt (with the sleeves rolled up to his elbows) in that scene.
Probably not what you're referring to, but just in case:
What's Wrong with Secretary Kim has a scene where the ML lowers the FL onto a bed before taking off his shirt. He was wearing white dress shirt and black dress pants. The FL was wearing a light pink shirt and skirt.
It's Okay to Not Be Okay has a scene where the ML carries the FL and lowers her onto a desk or a table that's covered in a dust sheet. The ML is wearing a white dress shirt and black dress pants and the FL is wearing a black dress in that scene. They move to a couch and then in the next scene the ML's shirt is on the floor and the leads are in bed together, but you don't actually see the ML take his shirt off.
Before We Get Married has a scene where the leads are kissing and sitting on a bed and the ML lays the FL back on the pillows before they each start to unbutton the other's shirt. The ML is wearing a white dress shirt and blue dress pants and the FL is wearing a white dress shirt and tweed pants in that scene.
Witch's Romance has a scene where the ML lays the FL back on a bed before taking his shirt off. The ML is wearing a black T-shirt and black jeans and the FL is wearing a black shirt and black skirt in that scene.
