When my boyfriend and I first started dating we had sex a lot and I always had multiple orgasms. We have been together for going on 10 months and we have sex less now. Which I understand that happens when are with someone for a while. I don't mind. I have a vibrator for when I am really horny and he isn't around. we both are really busy with school and work and other responsibilites. but for the first time last night I could not get aroused and I was not enjoying it at all. what can I do about this? I am also the only person he has ever had sex with so I am not sure if I am communicating my needs or helping him learn.