EO, I discovered the same thing about my H as we began to repair our sexual relationship. I did not know him as well as I thought I did, and for many reasons. Partly because he kept his sexuality hidden away from me and partly because he and I were embarrassed to 'show' our real selves to each other.
You know, I still sense that he is holding out on some things that he likes or dislikes, so that book might be an excellent way to open up that dialogue. I'll look into it! He hates reading anything secular in nature (so you can imagine how well a sex book will go over..) but it sounds too interesting to let that deter me.
