Is it unusual for a healthy attractive woman to feel compelled to give ?

I'm an educated, 28 year old professional woman who lives with my boyfriend, with whom I have a 7 year old daughter. We are into swinging, polyamory, and domination. I'm happy in my home life, but sometimes I'm so obsessed with fellating men that I can hardly stand it. It happens in mundane situations, like work, shopping, dealing with service people, and causal conversations. I find myself envisioning the whole thing in the most inappropriate situations. So far I've managed to avoid trouble and not embar myself, but this is very distracting and sometimes scares me. This has nothing to do with the physical sensation in my mouth. I'm also happy with my man, and in fact I get a particularly strong rush when he obliges me to provide this service to his friends and guests.The emotional rush that I get by being used and giving release to others this way is just irresistable. My fear is that I'll offer it on my own someday, or be unable to refuse. How common is this in other women ?