I am also married to a pilot. We also flew for the same company at one time, although that is not the case now. One of the biggest pluses is that I am with someone (as is she) who understands this business and the difficulties it can put on a relationship, and we are therefore better prepared to handle them.
But more than that, she is just an absolutely wonderful person and the best friend I could ever hope to have. The fact that she is a pilot is really just a footnote. I married the person, not the pilot.