I'm tryna find a bl manga that I read sometime ago

So basically the story is something like this that the ml gets married to a duke or smth but he doesn't meet the Duke when he reaches his estate, instead he meets the duke's servant who's there to teach him how to keep the Duke "satisfied and happy". So they both do the boombayah(ml is a bit twinkish and he's the top) quite a few times and soon it's time for the ml to meet his actual husband the Duke but ml falls in love with the "servant" and doesn't wanna part but the servant is loyal to the Duke or wtv so he says no to them running away with ml and they go to the duke's estate where upon reaching the ml finds out that the supposed servant is actually the Duke his servant and the season ends there. This is based on a novel acc to what I remember reading in the comments there were some novel spoilers asw that the Duke married ml to take revenge because ml's father did some shit to him and his family so he originally planned to marry ml and then kill him off but he didn't yet or wtv. So can someone help me out please