She probably think like that for now because she's not in love with him.. things change when you're in love and you get possessive ╮(￣▽￣)╭
But on this chap, http://www.mangago.zone/read-manga/raise_wa_tanin_ga_ii/nbt/hs_v-2-chapter-9.9/pg-1/
It looks like they already married cause she already wear black kimono n live together ( he’s go work from the same house as her )
The thing is, she doesn't feel an inch of love for him.. like what she said in the latest chap..
Her reaction is normal tho, he told her to sell herself n she did (￣∇￣") even tho only kidney, but I can understand her feeling
They're not married, as for now she's just planning to leave after one year. And she's staying in a guest house, not sure if it counts as living together.
She clearly said that she would kill the guy she likes if he cheated on her, meaning she doesn't like Miyama in romantic way
What Yoshino means is that she doesn't love him, and because she doesn't love him, she doesn't care if he cheats even if they did end up marrying. But if she does love him, then she wouldn't accept him cheating and would even go as far as killing him even if they did end up marrying. In other words: she doesn't care if he cheats, because she doesn't love him. But if she did love him, she wouldn't accept his cheating.
Err question..
So she will be okay with him cheat on her even though they married later? Σ( ￣□￣||)