Emmeeeeaaaa's Questions (3)

All i can remember is that the ml assumed the mc was screwing around with his sister and got mad at the mc because of that and the ml had black hair the mc had blondish hair

Can anyone please help my find this manhwa its like a dude that moved out of his apartment that he shared with his mom and dad and his friend sent a package to his old apartment and he went to his old apartment to get the package but he was met with a guy he bullied back in school the MC had blonde hair and the ml had dark blue hair I think

So like the things I can remember is its bl and in the start the MC smashed with this like cute girl and then after they smashed the cute girl revealed he was a man and I think the MC used to be a piercing artist and the ml was a detective I think the MC was blonde haired the ml was purple haired and it had 100+ chapters and the ml is kinda obsessed w the mc and stuff PLEASE HELP ME FIND THIS!!(〜￣△￣)〜