This is me exactly.
I first experimented when I had just turned 23, the only woman I've been with. Now I am with my boyfriend and it's a conscious decision that this is what I want - for life.
Sometimes I get an intense craving for a woman in my life.
I too don't stare at women in the street and get turned on. It's the person/character that they are that attracts me to them. Their compassion, love, understanding...
But I've decided it's not what I'm going to have for life, and as I cannot have both and be in a committed relationship, I've made the decision I have.

I mentioned my predicament to my T right in the beginning, but we haven't spent much time on the topic