I don't think minho really do love duna, i mean he is in his worse state and his only way out from his bad situation is with duna, with how he is always make an enemy out of everyone, because he know that duna used to look up at him. So that's it, i mean he is arrogant and full of pride, probably it's his defense mechanism with how he grown up poor but still not give him the right to be an ass****, doesn't mean i agree with the way duna degrade him, i couldn't even read it, well i wish for wk got his lesson, and minho gone to therapy and live happily, he need to know that standard of life success it's different over every person, sometimes one can life a simply life