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yushi asked a question

i can’t remember the name but it basically went like, this guy (A) had a crush on his friend(C) but then his friend got married and right before the wedding he slept with this guy(B) who turned out to be the soon to be bride’s brother.

we then find out the the bride(D) knew A liked C all along so she asked B to idk mess with A or sumn like that.
the last episode i read was A was considering moving to a different country to get away from alll that has happened. anyone know which manhwa this is?