That's awful, maybe having a bisexual child will help him understand it better, when you're ready to come out to him. You could even just explain it to him now. I don't know what your father doesn't "believe," about it, but with some of my family members, it's that they thought bisexuals are just indecisive and you can't like 2 genders, you need to choose 1. I usually explain to them using analogies. I find it's the best way to help them understand and show flaws in their logic. Such as, some of people are right handed, some are left handed. But of those people, there are lots who have some degree of ambidexterity. Some might have a dominant hand, but there are lots who can use both hands equally well. People don't need to have just 1 strict, unwavering trait or preference. We don't apply that to anywhere else in life, why would it be any different for sexual orientation?

This could do with 4 less periods and a space.

I hate it when people say that. No offense but that's just as judgmental as not being for any of the LGBTQ community. If he doesn't approve of you, don't let his opinion change your lifestyle.

**** you I agree with your dad yall are weird next thing you know you're going to become a gender bender and then a feminist which are retarded

I'm bi, and just now starting to be open with it. My good friend just told me last week that bi people are "faking" and "need to pick a side." I then told my mother I am bi, and she said, "Are you sure? We'll just don't tell anyone!" I feel your pain, OP.