Does birth order influence relationship success?

Updated July 24 2014 - 10:09am, first published July 4 2014 - 5:13pm

I’m first-born. My husband is too. I’ve had relationships with men who weren’t number one kid. They didn’t go so well. Was the different order of birth a decisive factor in that negative outcome? Or did it play a part, at least? And if that was the case, is there anything that can be done to overcome this unfair, uncontrollable bias?