My girlfriend and I are getting along fine but one day she calls me "dag" out of the blue and tells me that my girlfriend wants me to "step mother" if I want her to. This confused me because my girlfriend are only 5' 4 and weighs 106 pounds, and my step mom is a dancer. So, my question for you is - Does your girlfriend tell you that you need to "step mom" if she's not happy with you?.