I said it before, but usually in other stories, the bottom would stop questioning the top after hearing the sob story, but the MC has really begun to doubt everything. It's even blatantly made clear that the sister is trying to butter up the MC to the ML (which is fucked up bc I get she loves and may want to help her brother, buuuut she's just using the MC knowing their history).
Honestly, I have hope that the author is actually going to go the route of the MC leaving on his own because there's a lot more attention being placed on the MC doubting everything. Otherwise it would be pretty shit. Anyways, I can't wait to see if the MC becomes incredibly cold to ML and he eventually leaves. It may even parallel the past where the ML ended the relationship when it was made clear that the MC was hurt by ML not seeing him as an actual lover. Maybe ML may get a bit honest and think they are becoming like a true married couple, only for MC to be like, this is a contractual relationship. That would hurt fr.
Anyways, this is me coping. ╥﹏╥