Sounds to me like she is insecure about her bf. Not wanting to discuss it, show you a picture but tells you he is good looking, essentially. Maybe he isn't and she is embarrassed. Whatever it is this definitely sounds like her stuff and not yours. You see to think in many respects that she is a good T and has been good for you so maybe a slip up isn't all that bad. It isn't right but it might not be the end of the world, or of the relationship. I hope that she responds in a better manner than she did in your session.