who will my son marry?

On Sunday I took my son Leo to his school to play on the playground. During school the playground is separated by grade - the kindergartners have a separate playground, one for first and second graders, and one for 3rd through 6th graders. Since Leo is at the end of second grade (two more days left), he has wanted to play on the "big kids" playground since he was a kindergartner. As we were walking up, he made some negative remark about girls. I told him that he would change in mind about girls and would most likely marry one. He immediately said no, that he was going to marry a boy. I smiled to myself, thinking that he was imitating his own family. And chances are he is heterosexual and will marry a woman. When I mentioned this to my husband David, he said that I shouldn't dismiss Leo's statement so quickly. David said that at Leo's age, 7, that David knew that he was interested in other boys, but without role models in either his life or the media he didn't have an understanding or vocabulary to express it. I guess that is possible, but nothing about Leo has set off my "gaydar." I am curious though - of the people who read this who are gay or lesbian, did you know at age 7 that you were attracted to people of the same sex?