How likely are you to flirt with someone of the same sex?
Fantasized about the same sex?
Being in a relationship with someone of the same sex, or just hooking up with them?
An attractive person of the same sex started flirting with you?
Get as nervous around someone you like of the same sex as you would with someone of the opposite sex?
Members of the opposite sex or the same sex?
Attracted to several different people of the same sex, or is it just one in specific?
Gone on a date with the same sex?
Come to the point where you engaged in a sexual act with the same sex?
To find out the answer?
You could be bisexual. But to really know for yourself, you have to try.