"I say something deep" No girl, you say something somewhat stupid, not everybody need to had sex to love each other, i read to much Shoujo for knowing that. Maybe it's true in the case of MC but even with that, it doesn't mean Miwa had to apologozise because she doesn't want to have sex with Saeko, if you're not ready to do it then don't force yourself to keep her, it will hurt both of you.