Actually later on Demios soulmate appears during his madness. Thats when he knows the Titii girl is lying. So yeah he imprisoned the mistress while pregnant which is insane. It appears Demios soulmate was the FL BUT! Roxanne already claim the FL and FL knows the secret of Roxannes Imdentity.
That's the thing, the FL is Demios' mate, then who is Roxanne's mate supposed to be? The name of their mate is written on their body so who was the ML's if the FL's name is on Demios'?
I thought maybe Roxanne and Demios switched names too? Like the real ML’s name might be Demios? Since if they switched bodies, they’d have to use that body’s name.
I had my suspicions from the current chapter that the guy FL was with when they were kids was Roxanne all along and they were somehow switched- I had to go through the spoilers to check and yup it's correct! The one FL was with when they were kids was actually the ML. According to the spoilers, someone (? empress) used black magic to switch the appearances of the ML and demios (demios would go crazy and mad bc of the curse given by their goddess for being an illegitimate child etc. and the empress maybe thinking he's her real son tried to protect him idk). Spoilers still lacked information and there's a lot of plot holes here and there as the questions about who is who's true mate and what not but that's the gist of it basically.