Michael T. French and his research team at University of Miami found that by reviewing a person's attractiveness, personality, and grooming habits, you can determine how likely they are to get married. The team reviewed the longitudinal data of over 9,000 adolescents. Basically, they followed people starting with their most awkward phase of high school in 1994 through the times when they became adults (aged 24 to 34). The interviewers rated the participants' looks, personality, and grooming on a scale from one to five (you want a five). All of this culminates into a general attractiveness rating. What they found was that men who had an "above average attractive personality" were more likely to get married. This kind of gives a scientific basis to what it means to be the "total package."
We should note that the research team couldn't identify the trend based on any individual trait. You have to consider all three aspects together to determine who is the marrying type. However, researchers did note that, if someone is lacking in something like grooming — well, that can be rectified.
Of course, even if you've got the entire package, marriage may simply not interest you. We also don't think you should take this information and start making notes about people you meet at the bar. Plus, there are external factors that the study doesn't address. For example, perhaps some of the participants were homosexual and living in a state that didn't allow gay marriage. Or, maybe some of the participants had a life partner, but simply didn't go for the wedding part. Still, it's interesting to think about the ways we physically manifest our attitudes about commitment. (The Atlantic)