I read this before going to sleep, but my whole thought process is this author really likes writing drama as seen by their previous work, so I just assume every plot point is for drama.
The MC's brother's bride keeps staring at MC andeveb MC notices and was like 'is she staring at me?' Looking behind himself to see if there was someone there, I interpreted this stare as uncomfortable for MC.
Her smile is creepy is my personal opinion, I think that the author captured a dead eyed smile really well while drawing the bride.
I believe this wedding arc will be used to out MC in a 'damsel in distress act' to make the ML come to 'save' him, not from the bride, but from his brother
I just really hate how people immediately assume the worst case scenarios when it comes to female characters. I mean, yea sadly we got to many authors out there who basically promote misogyny in their works, even if they are women themselves. Maybe they don’t know how else to create drama or it’s simply a self portrait of themselves- or both combined. It’s just awful and I wish people would realize this and conclude that it’s unwise/immature to jump to conclusions immediately. And even if the worst case scenario happens, let’s maybe question if this was truly necessary or what the purpose was to begin with. Ruining multiple female characters to strengthen MCs or to bring couples together (pushing one’s work)- seems often to be the actual goal then some representation and talk about the reality of many homosexual people. And supportive ones will never get the attention (let’s take MC‘s sister AND his mom - she may not be perfect and not every choice is right, but she is not abandoning him because of his sexuality) they deserve.

Ewwwww, bro ewwwww
I can feel fer bad intentions from the creepy ass smile in that last panel, if she tries to make a move on him and his brother blames him in going rage so bad