Okay so I am 18 years old. I have a fiancé who is also 18... we are very much in love... we have done everything for each other... we have been together for almost a year.. we have a great sex life. Until here recently. Last week on the forth him and I had sex which was great the nest day which was my b-day we tried to have sex and in the middle of it he got soft.. we tried a lot that day to get him hard... seems to be the only way he can get hard is if he messes with my butt... I really think he is losing interest in me.. that really bothers me... we have tried so much... I don't know what else to do. Could he be losing interest? I need some advice.. thanks