He used him and played him right throughout the whole time they were first together. I can't stand Su Mu's character because he still expects Ning Ye to believe the MC loves him?
I already acknowledged that. It wasn't right, but Su Mu even explained it to Ning Ye. Of course Ning Ye (as usual) never gives him a chance to explain. He has always been good to Ning Ye except from deceive him, while Ning Ye has been abusive and possessive throughout their relationship.
Also mentioning, Ning Ye was abusive from the start. I acknowledged Su Mu was wrong to use Ning Ye for money, but it's incomparable to abuse.
Correction: not from the start, but pretty early on, as soon as Su Mu reunited with his friend. Adding on to this since I really hate Ning Ye, he tried forcing himself on Su Mu multiple times, also quoting that Su Mu hates him because he doesn't want to do it.
Su Mu might've 'used' Ning Ye at the beginning, but comparing that to the mental and emotional abuse Ning Ye put Su Mu through? No, Su Mu is not innocent, but he's clearly the victim in this situation, and has only treated Ning Ye well.