Am I doing something wrong? He will never stay with a woman that does not need to sleep with him very often - this is not because he is sex crazed, it is simply because he sees passion and making love as a natural extension of the love and desire he has for his girlfriend.
I didn't like some things about her so I didn't try to connect with her any deeper.
He wants you to get along with his social circle and the people most important to him because he wants to include you in all areas of his life.