Keith Urban and Nicole Kidman have been happily married for 15 years — but they almost didn't get together at all.Urban recently sat down with Kelly Clarkson, and revealed that his own insecurities nearly led to him sabotaging what would become his successful marriage.Addressing reports that Urban said he initially wasn't interested in dating Kidman, Clarkson jokingly asked, «where was your bar for humanity if Nicole Kidman doesn't make the cut?»Urban said that those comments were completely