As usual, I missed this thread way back when, so I'm posting in it now.
When did I know is the question I usually get from people within an hour of "Out"-ing my self to them. Most recently, some people at work. And I always laugh when I answer them because honestly, I'm not even sure.
When I look back at all the things I did while growing up:
-The Olivia Newton-John fascination
-The Farrah Fawcett poster on the back of my door
-When my friends and I always played together, I was always a guy character because I wanted to be the one who got the girl.
-My obsession with Lea Thompson...that damn Howard the Duck movie anyway.

And then there was Space Camp.
-All the crushes I had on girls but didn't realize they were
real crushes.
-Oh, and the best one by far.....One day, the neighborhood kids and I were all playing in my backyard and decided to have a wedding. I, of course, was the groom, and I married my best friend Amy. Just recently while at the bar I told her we needed to get divorced since she's getting married in June. I'm a little heartbroken to be honest.

She was my first. Hee hee.
Anyway, there was all that and then my freshman year in college I really started to feel stuff and even told my roomie I thought I might be gay. But she was half asleep and didn't remember that conversation until I "Out"-ed myself to her a few years ago. And, just like others who have posted in this thread, my friends were all like, "Oh, yeah. We kinda figured." What the hell? Maybe someone should have clued me in a little sooner.
But, I guess it wasn't until my senior year in college with my roomie, Colleen, that I finally accepted what I had known all my life but never dealt with.
So, now, I've been in a relationship with my gf for almost three years. My family has finally accepted it as best they can.My friends are all supportive. And slowly but surely, I'm coming out the closet at work.
Wow, it has certainly been a ride.
"Honestly, I think if you prefer chocolate to sex, then you're clearly having entirely the wrong kind of sex."~~The Tao of Ruth