How do you know if your son is actually gay, or if he's just being a little brother and copying his big sister like most younger siblings do at 3 years old?
My brother played dress-up, my little pony, and barbies with my sister. He also only liked pretty girls (if you were an ugly teacher or something, he hated you), and then later in life obsessed about the spice girls, Brittany spears, and his favorite x-man was Storm. Also, musicals instead of sports. 100% gay now, and we all just knew forever.