If you are "happy" with your girlfriend you shouldn't care if your ex talks about you to her husband. The past is the past.
Maybe her husband never asked her questions regarding her previous relationship. Lots of guys have no interest in hearing about the previous lovers their wives had.
It sounds like what is really bothering you is your ex dated you for two years and dumped you only to turn around and (marry) another guy whom she knew for less than a year. Either way if you were madly "in love" with your current girlfriend you wouldn't be thinking about this.