While it looks like that friend of Mincheol likes Haesoo that's why he's nagging, I'm kinda seeing it that he's thinking Mincheol was crazy for choosing Haesoo than that Noona they were talking about, that he's crazy for choosing someone who he needs to work so hard to put food on the table when there's an easy option—the loaded Noona.
I kinda think too that maybe he started treating haesoo badly when he realized his situation with her. It's the reality of many to compare situation like "What if I choose this path"? you know what I'm talking about...
While it looks like that friend of Mincheol likes Haesoo that's why he's nagging, I'm kinda seeing it that he's thinking Mincheol was crazy for choosing Haesoo than that Noona they were talking about, that he's crazy for choosing someone who he needs to work so hard to put food on the table when there's an easy option—the loaded Noona.
I kinda think too that maybe he started treating haesoo badly when he realized his situation with her. It's the reality of many to compare situation like "What if I choose this path"? you know what I'm talking about...