I love sex, would have it constantly if i could. My man on the other hand does not. He is like a 3 times a month type. The key to keeping me has been understanding the need for self sex and making sure that when he is up for it that he more then makes it worth my time. He will lead me on with hours of foreplay for several days leading up to the big day. I am more then happy to wait on it, cause it is worth it. There are alot of ways to give and get pleasure other then sex, make sure he gets to experience them in the between times.
Yes, it is a big problem, especially for him.