Today I tried to sit by this girl for a little bit while I read and I let her study and didn't want to bother her. I tried to tell her how my day went after class while walking to her car. I was extremely upset that she sounded and looked uninterested. On top of that, once we got outside, this one time, she sped up and didn't even walk with me. I was okay with her doing that since she was having a bad day---but no--she wasn't having a bad day since she stopped to talk to her very good friend and was actually very happy talking to her. I don't get it. Yesterday she didn't seem disinterested but only confused but still talked to me. Why the sudden disinterest?