While the average length of a relationship is approximately 7.3 years, a German study said that long-distance relationships tend to last less than half as long, or just under three years.

Do long-distance relationships usually work out?

Long-distance relationships have a 58 percent success rate, according to new research. A new study of 1,000 Americans who have been in a long-distance relationship found that whether or not you and partner make it through the long-distance phase will come down to a coin flip.