I believe everyone is bisexual what does everyone else think

Hi really want to talk about this and get other people’s opinions really. I genuinely believe that everyone is bisexual I am I know that but I see myself as a hetro romantic. I will admit that I find women attractive and think I would like a bit of that but when it comes down to dating I date men I can’t see myself getting together with a woman. I also know this person who swears that he is gay I knew straight away he wasn’t it was a cover up. I caught him once sending women flirty messages on his phone but I never called him up on it as it’s his business and not mine. As a woman on the spectrum I don’t know really I’m just curious as to what everyone else thinks. Like I said I find women sexual attractive but I would date a man rather than a woman. Please feel free to share your opinions on this topic. I mean no offence to this post I’m just curious really is it just me that thinks this or does anyone else.