When was the defining moment for you that realised you were gay?

I have known all my sexual life that I was bi-sexual, I have been in relationships with both sexes, but it was the week of my 29th birthday that it dawned on me that was actually gay. When I came and told me family and friends, they all just rolled their eyes at me and took you long enough...They all knew and were waiting for me to see it in my own time. My coming out has been such a awesome experience for me, but I would love to hear about others experiences...