Not true, not always.
You and I know a certain someone who's expectation level has always been above his reality level. Now I will admit he found someone post surgery and did get married. It's like when she hit her goal weight she didn't even kick him to the curb, she just packed up and left him with her dying mother, took her kids one of whom the youngest knew him as her father. Now this is the nicest, kindest man on earth you and I both know that and in truth he is a great catch but in his mind he wants a barbie. This makes his expectation level higher than his reality level. If he would ponder the fact that not all good things come in barbie sized boxes, I am pretty confident he would be happy and have a pack full of kids. To keep the same line of thinking he once had only attracts thing and that is a Goldigger.