Confused married biual woman?

Hi. I am 22 yrs old and have been married for 3 yrs. I have recently been having problems with my husband due to the fact that I am . He was aware of my preferences while we were dating and he never had a problem then. I am faithful to whomever I am with man or woman but he seems to think that I want to be with a man and woman at the same time and that is totally not the case. I chose him to spend my life with and as my confidant I entrusted him to the fact. Did I make a mistake? Should I have lied for the rest of our lives just for the sake of his manhood? What is so wrong with my biuality if I am faithful to him?