How do you know you're gay?

I struggled with my sexuality....initially thinking I was straight, but then I was kissed by a male friend and felt aroused. For the next few years I had only homosexual relationships and thought of myself as gay, but then I met and fell in love with a woman. It took some time for me to figure out that I was actually bisexual....and even though I’ve been married to a woman for a number of years now, I’m still bisexual.