Go sleep around idc but leave the mc alone.

My issue with the ml is not that he's sleeping around with countless randos, but that he's purposely being malicious towards the mc. The ml knows the mc has pure feelings towards him and takes advantage of these feelings, even goes as far as show off he's just had s3x with a woman in front of him. Through his actions he's technically saying "I can sleep with everyone but you have to be loyal to me" bs. The trashy ml isolates the mc and prevents him from forming any other relationship. The ml sabotages any potential moment for the mc to meet someone new. It's creepy and annoying. The ml sees the mc crying but instead regretting being an asshole or maybe giving him space, the ml feels happy that the mc is miserable while he has his own groupchat of sleeping partners.