I don't know why, but I think im bisexual

You could put a tad more detail but if you really believe your bisexual then you are,its a thing that happens at birth thats how a male or female can turn gay due to the estrogen and testosterone levels can getting mixed up sometimes theres more testosterone or estrogen then others and sometimes there is being bisexual a perfect balence,but this can also happen if your a really turned on teenager as well so make sure its not that before you start saying your bisexual.

Thanks for the advice

There a lot of people who are bisexual.  Studies are showing that most people are not 100% straight or gay, and that our bisexuality falls somewhere on a scale between straight and homosexual.  You may not be right in the middle with a score of liking men and women equally, a 50, but you might be more toward one end or the other of the scale.  Either way, it's not important to label yourself so much as just experimenting, and finding what you like and what turns you on the most.  Have fun, be yourself.  You'll find out eventually what you like the most whether that's men, women, or both!

i dont no why but i like both im worried my friends wont like me any more should i keep it secret from friend and family ?????!!!!!!