When I started out, I hadn't ever experimented with my sexual orientation at all. Now that I am free to be who I am in every way (in a sense unrestrained), I find myself just attracted to people in general both sexually and romantically. It all happened kind of fast I guess, and I love it.
Now as far as kissing being sexual, I definitely have to say that to me kissing can be VERY sexual. I have always gotten some of the greatest pleasure from a kiss. It just depends on what it means to you and the subconscious intent of the kiss is. To me, when the context is right, a kiss is absolutely sexual. To the max.