You're welcome.
Couple things.
1. To answer your question my bisexuality feels normal.
2. I was raised (indoctrinated) straight and thought I was 100% straight until I crushed on a handful of guys in high school. Even then I dismissed it because I was so overwhelmingly attracted to women--dozens if not hundreds of crushes and dated only women. I didn't hook up with a guy until I was 22. That's when I fully accepted/learned I was bi.
3. I've dream journaled for over 40 years. My sex dreams run 90% straight 10% gay. When I first joined this site I listed my pref as 90/10 based on this--dreams over which I have no control. Later I changed it to 70/30 to reflect more accurately the number of partners I've had.
Had you asked me at 21 I would have said I was 100% straight from birth. For a short while there I thought I might be 100% gay because--like many who see the world in black and white I too thought I had to be one or the other even though it made no sense in my case.
I think it's important to remember that labels may be etched in stone but individuals are not. We are always learning, changing and growing. For myself it's best to keep and open mind and open heart.