I always had a deep love for dancing in general, which I guess isn't always so common in younger guys (wrong board to post this on I know, I just mean in general), this is just the first time I found a particular dance which really just clicks for me in every way. It is like pure passion which is all that I am about.
In short I am already addicted to it, it gives me the same feeling alot of music does. She might as well have asked me to stop reading books or to stop listening to classical music.
I have been with her for about 5 years now so it is definitely a comitted relationship, and she knows me well enough to know that I won't give up on something that I truly love. Tango, like you said, has very quickly become quite special to me.
There are far worse indiscretions that a boyfriend/husband can commit, although I definitely understand her intense discomfort with my love for the dance, which to her must almost surely look like the love of another person.
In short, it is the connection and love of the dance which compels me to continue, and both her and I both know that I will never quit. She is trying very hard to accept who I am and I must say she is doing better, so my hope is that she will eventually come around completely.
I don't at all wish to lose her, but again I won't quit doing something I love. I will however, do my best to give her all the time she needs to slowly get more comfortable with it. One way or another dance will be a regular part of my life someday.