Is it possible I could be asexual?

As in the sexual orientation (http://en.wikipedia.org/wiki/Asexuality) not the reproductive process obliviously. Well abit about me I'm 26 and I've only ever slept with one man and I didn't think much of it, not that I thought it was gross or horrible or anything, just didn't think much of it that's all. If I was in a relationship again I would have sex but I don't have any urges to have one night stands or flings. I'm not a closet lesbian, I have never been attracted to another woman. I am attracted to men but more in a romantic way rather than a "phawar!! I would!" way (men I've had crushes on have been ones I've known personally in real life, apart from a few male celebrities when I was a kid which I didn't think of in a sexual way). Some of my friends have suggested that my lack of interest might be cause I haven't met the right man yet.