We have a group project in uni, and during a Skype discussion, I raised a point that was contrary to what this other guy was saying. My other groupmates agreed with me, and the guy basically became silent the remainder of the meeting.
I thought nothing of it, and then this afternoon, during another meeting (face-to-face) he was throwing major shade at me.
I can only trace it back to me contradicting him because I don't have any other contact with him other than at school.
Do I ask him why he's mad at me? Would you?