First thing you are not a wh** for "wanting it more"
Nothing wrong with wanting to be intimate with someone you love and care about. It's a wonderful expression between two people.
Have you asked him what he likes? Does he know what you like? I really do not know what to tell you as far advice. . . . I was with a man that was the same way(once a month), I ended it after a year. . . he made me feel like something was wrong with me, he always had an excuse and his age was one of them,,,,,, then I said to him my Exhusband was 20 yrs older than him and my Ex didn't have any problems........ that bf is still single, no longterm gf (it's been 7 years) never married and a very pretty boy, looks like a movie star. . . . . I felt he was probably in denial and should come out of the closet.. haha gosh I certainly hope nobody I know never reads this site!!! haha