I too can relate to this. When it happens, the sex can be great. I always make sure that my wife reaches the best orgasm she can, but in between all the great sex there is a lot of no sex. She seems to be able to get interested when I start something but she seems to not want to be the instigator. She will start, but quickly loses interest. Don't get me started on "I'm Tired" or "I have a Headache". It just amazes me too, the number of people who have said that when he is always horny, she is not and visa versa. Why can't we get this together. Ayway I'm done bitchin' (for now anyway!!!).