My dog suddenly became scared of me after 6 months. He used to be extremely excited to see me and would jump all over me but now he hides under my bed all day long... I don't know why because I never mistreat him at all. When my girlfriend comes over he'll come out and act all normal but when I show up he starts to shake... He won't eat when I feed him anymore but will when my girlfriend does... What gives? I love him very much and would like him to love me back again..