I blame the author for confusing us. Because if Yuki had a few crushes on men before he met Misaki and Yuki, I would agree with you 100%. But it seems he still loves Misaki and is obsessed with Yuki sexually. His father is a dickhead but a real one TBH. He was harsh on Yuki since he is his only son yes, but his father told him it's his job as a man to please his wife, even if his dad is sexist af, he had me here. Yuki straight up cheated on Misaki and tried to hide it. I like talking to you btw~ tell me more what you think??

girl your husband is gay and doesn’t want to be with you in a romantic way anymoooore aaaaa move on already