['I had the worst time last week. I went with my girlfriend to see one of her friends and she talked to him with so much more energy and passion than she does with me.']
I really wish I could NOT correlate to that.  But I can.  Me and my girlfriend are going through a weird time right now where she likes to tell me how hot other guys right to my face.  It is a terrible feeling, and I know exactly what you are talking about.  If it occurs a lot more I suggest you saying something about it, better to know the truth than dwell on it everytime.
I had a girl that I was seeing one time and she asked if I wanted to come with her to meet one of her friends. I went along and the way she talked to her was so much more passionate and energetic than with me and it made me wonder what he has that I don't.