Dear Prudence,
I'm a man who was taught by my father always to build an environment of honesty and trust with my significant other. I have recently found the perfect woman for me, and we literally tell each other everything. Sometimes, however, that means my girlfriend will tell me something that makes me feel uncomfortable. When we were in bed last night, she told me that sometimes she just is not attracted to me. I thought she was joking, but she was serious and did not seem to think she was insulting me. I let it go, but today she made the same remark, and I called her out on it. She apologized and said she just feels comfortable enough to tell me silly thoughts that come to her head. Is my philosophy of a fully open and honest relationship unrealistic?