My boyfriend talks to female friends which we both know and I am totally fine about it, except when I find out that he has told one of them that she has great tits and that her guy should be very pleased and told her not to tell anyone. He also talks about threesomes with several girls, and asks how adventurous they are, commenting that parties with them must be fun. He talks about other sexual matters with them, and I want to know where to draw the line. Is this classed as cheating?