this girl that i'm sleeping with at the moment ( we're not dating or anything, we just sleep together) i would say 9/10 times i'm not in the mood. i dont know why, but my sex drive just doesn't seem to be very high. when i was dating this girl about two years ago i was the same way, we had sex a lot, but it wasn't uncommon for me to say no not tonight. and when i say no not tonight, i dont butter it up.