Help: Find a BL Manhwa

I suddenly remembered a BL manhwa that I read few months ago, and now it’s been bugging me and I hate how I cannot remember the title.

The MC was a short black haired dumbo with a little brother that was so cute, ML was a tall masculine rich blondie and I think his name was Hendrik or Henderson or something.

MC and the lil brother lived in an abandoned place somewhere in the ML’s estate but ended up moving to the mansion.

ML’s brother hired the MC to work at the ML’s mansion because MC resembles the ML’s old fiance named Maria. ML has an old butler with glasses on.

I remember thinking the MC was so dumb and slow and the ML was stupid as well. Now I want to reread that shit again