Me and my husband have been married for 3 years now. We have sex alot, about 5-6 times a week, and try alot of strange and new thing, but he does not want to have anal sex with me. He says he is afraid of hurting me, but i tell him its okay we should just try it once. He really likes sex but does not even want to try it. Why is this and how can i convince him to try it atleast once?