I'm 18. My boyfriend and I have been together for quite some time now. We have always had amazing and regular sex. Lately, I just haven't been in the mood. Even though the sex is still great and it's pretty frequent, I'm not as into it. Our relationship hasn't changed. We are still going strong as a couple and we love each other more each day. The sex is just getting repetitive(I guess that is a good way for me to describe it). Sometimes I feel like I'm obligated to do it because I'm his girlfriend and there's no reason for me not to. Other times, I absolutely despise the idea of sex. HELP. I want to be frisky like I used to be. I want this to be fun for both of us. What can I do???