
Mmmm ... The novel explains it better.
Spoilers:
Yurien already knows everything. He is just very careful as to not make her run away.
Braaha is a nice boy but nowhere strong enough to support the kind of emotional damage she endured. Yurien is really a good male lead. Once you see from his pov you will understand better.

I assumed that Yurien knows and based off his question for her, that he’s restraining himself yeah. But I’m just not a fan of their dynamic plus the power imbalance between them for now. I probably will like him more once they get together/the story progresses but still don’t really like how they started out

I read all of it on https://fourseasonsforest.wordpress.com/the-flower-with-a-sword/
And bought the translation from there.
Baraha…my beautiful second lead…the only thing Yurien has over him is he’s more on equal footing with FL in terms of power and their past, that’s it. FL and Bahara have much more natural interactions and lowkey FL probably knows more about Baraha than all the time Yurien spent staring at her in the dungeon