These wedding photographers have some pretty good hunches about which couples will last a lifetime, and which will be divorced by next week. If you do that job for long enough, you learn the telltale signs of a relationship that's ripping at the seams. For lots of people, weddings are framed as one of the most important days of your life. It's the day that you formally agree to spend all your days with someone you love more than anyone else. The best part is that your family and friends are the…