What if Taehan is coming from a rich family? He has a complicated childhood and he ran away from home something like that. When mentioning marriage it look like he wasn't happy.
The title say King's beloved, yeah I also can see that. Maybe her mother did something wrong (we don't know) but still she is your daughter. If I were her I would never forgive him.
My guess was right, it was the emperor who did that.
Where's the fucking dad? How the hell did he became a Duke? He doesn't know until his wife and kid is getting killed by his mistress?
I have a bad feeling about what gonna happen in the next chapter.