You were doing a project with your male friend but your friend tried to flirt with you and Zian got a bit pissed, when Zian starts to get mad at him you would stop him and say "hey its okay, take it easy." after that Zian stayed silent just for you but he couldn't hold his jealousy and be mad. But he just stayed silent because you asked him to.

after the project you tried talking to Zian again but Zian gave you silent treatment and ignored you