your example is irrelevant & still doesn't justify how he was an ass or how he cheated on her. she says it time again that he respected her & treated her fairly. they both agreed to the arranged marriage & she was aware of the possibility of him marrying other concubines. she misunderstood his courtesy for love & crossed the line (literally attempted to murder someone). & you do realize that in the first timeline, her feelings were one sided but the current timeline it's reciprocated right?
You can call it whatever you want but in my opinion he cheated on her ╮( ̄▽ ̄)╭ If he didn't ask her for permission to being other mistress then it's cheating. And I know it's different times but as I said even if something is legal in one country doesn't mean it's right thing to do lol. And he loved her in the first timeline, he just changed his mind after some time when she started acting crazy. But now he is the on that act like a psycho and she will just take him and love him like she used to? Really?

How did we get from "I won't fall for him again bcs I'm not that stupid?" to "OMG I love him" just in 5 chapters? ヽ(`Д´)ノ