This guy brings me down for no reason. He's mean to me and tells me I can't do anything right only when we are alone. When we are in front of people, he doesn't even attempt to do it. He goes around telling people he loves to mess with me/bully me because I'm so quiet. He claims its all a joke but he never tells me he's joking. I was helping him with something and I heard him tell someone I wasn't good at it. He says stuff like that but keeps asking me for favors.