IMO you should move on, the guy you pranked sounds like no fun. He would prank others but won't take one in return. And if he/they helped you move but complained .... those are not friends. I would take a bullet (so to speak) for my "friends" and I know they would do the same for me. As others have said; friends should be there for you through thick and thin. So move on, who knows you might meet that "true" friend.
Question: .... how could paper clips ruin/break something.
Yeah thats pretty much what I'm going to do. They don't ruin things, when you try to clean them up by just swiping them (angrily and not really paying attention to what he was doing) and hit other things. I don't know why he was trying to help clean in the first place, we were already cleaning the stuff off of his rommie's side and then we were going to do his next