Confession... Fantasy

I've never told anyone this before (besides my hubby) and I'm not ready to tell anyone who I am when I say this. But I want to say it even though I don't want people to know my identity. I am married to my husband and I love him with everything I am, but I often fantasize about women... I've always wanted to do things with them, but don't really have any females in my life to try it with and obviously I am married and wouldn't do that. My husband said he is ok with it if I do though. I also often feel ashamed of it.... Is it possible that I'm bisexual or just curious??