I'm a 16 year old girl. I've never had a boyfriend before. I don't have any brothers and I go to an all girls school. I don't socialise with people outside of my immediate family and school friends, so I don't have any friends that are boys (as opposed to boyfriends). Recently I was talking to a boy I met on a volunteer programme. I thought he was nice, but I wasn't sexually attracted to him. This got me worried about why I wasn't attracted to him. I began to worry that I might be gay, even though it had never ever occurred to me before. Once I started thinking about it, I couldn't get the thought out of my head. Suddenly, I began to find women sexually attractive, even though I never had before. I have always found guys good-looking, but I have always known when girls were pretty as well. All I've ever wanted, old-fashioned as it sounds, is to get married to a man and have children. I don't understand this. I don't have a crush on any girl at all, and never have. Please help.