I need help !!

Sooooo lol I'm 25 years old . I've been with my husband for almost 10 years now and we have been married for 4 years. We Are like the best of friends !!!! Tell eachother everythinggggg except I like really want to have a 3 some and I'm sooo afraid to tell him. I think that he would think that I'm like a lesbian on the low and would become suspicious when I'm out with my friends or something like that. What if he thinks that I feel like he isn't enough for me... Or what if I'm bringing bad luck into our relationship or bedroom by inviting another woman to share some of our most intimate moments together . Fact of that matter is , I'm also sexually attracted to woman and instead of being sneaky and cheating I would like to include him . Any advice on how I should go about this ?