DESPERATE

help me find this manhwa PLEASE. Its a yaoi. The mc is grey haired, is trained to be like a pet dog to this son of ceo of some sort of company, he wears glasses. Glasses dude WAS apparently straight and they had this dom and sub relationship. And grey haired mc is ok with the whole thing because he has basically nothing. but he was kicked out by glasses' mafia fiance's family for being a nuisance. so the older brother of glasses, ML with black/blue hair took him in. he owns a bar, he lets grey haired MC works there. And their relationship blossoms. then some shit drama happens where glasses is apparently not straight and wants grey haired mc to come back. He apparently sabotaged ML. This whole brother complex thingy happened. PLEASEEEE HELP MEE ITS COMPLETED ALSOOO