
Just move on already about husband's mistake in first life. It's not that I justify his action before (I think he is careless naive follow the fil and emperor) but the biggest problem who did behind the scene are emperor and his fil. So he prepare himself make up with that. He got character development. It's not like he's cheating or purposely make fl suffer like what fil did.
Anyways, with the husband remember the previous life help them to avoid controlled by emperor and fil. While with fl had her memories of previous life make her more stronger mentally. (๑•ㅂ•)و✧

Giovanni is unwed child from his mother other other man before his mother married with leegang's father. That is why the grandmother dont want him
Or
There some superstitious thing connected between giovanni cannot feel heat and the grandmother's dreams always came true. So that also why the grandmother dont want him
Poor taegyum T.T so many competitive, nam teacher always rejected but give him hope and family that didn't try to understand him. I bet his personality change is because of what happen in that party