There are a few different forms of attraction. Having a sex dream about someone of the opposite gender doesn’t necessarily make you straight. Having a sex dream about someone of the same gender as you doesn’t necessarily make you gay. However, none of those things - sex dreams, sexual thoughts, or even feelings of intense attraction - necessarily “prove” your orientation. Sometimes, we realize this because we have sex dreams, sexual thoughts, or feelings of intense attraction toward people of the same gender as us.
Many of us grow up to assume that we’re straight only to find out, later, that we’re not. It all started with a sex dream - does this mean what I think it means?