However, Wolfinger says having multiple sex partners before marriage can significantly increase the chances of getting divorced.

He suggests having children out of wedlock with a volatile person can also lead to a split due to increased drama.

Wolfinger also says people who typically wait to wed have trouble with interpersonal relationships.

Or it could just be that people are simply set in their ways at an older age, or never wanted to wed in the first place.

"My money is on a selection effect: the kinds of people who wait till their thirties to get married may be the kinds of people who aren’t predisposed toward doing well in their marriages. Some people seem to be congenitally cantankerous. Such people naturally have trouble with interpersonal relationships. Consequently they delay marriage, often because they can’t find anyone willing to marry them. When they do tie the knot, their marriages are automatically at high risk for divorce. More generally, perhaps people who marry later face a pool of potential spouses that has been winnowed down to exclude the individuals most predisposed to succeed at matrimony," Wolfinger writes.

His research seems to point to the fact that late 20s are the best time to get married.

Based on other research, the longer a couple dates before marriage, the longer the marriage will last.