With the mountains of data it has on its members, Facebook has a pretty good idea if a romantic relationship between two people on the social network will last.

Last week the head honchos at Facebook let lovers in on their secrets when it comes to predicting when and if two people will become a couple and whether or not the relationship will last.

In the 100 days before two people become "Facebook official," the two will share more and more content on each other's Facebook walls reaching a peak of about 1.67 posts per 12 days, according to Facebook Data Science.

Once the relationship begins, the frequency of interactions on the social media site decreases -- presumably because the couple opts to spend more time together in person -- but the positivity of posts tends to go up, with words like "love," "nice," and "happy" becoming more common. 

A further analysis shows that half of all relationships that survive the first three months are likely to survive four years or longer. If a couple is going to break up, it's most likely to occur between May and July, according to Facebook's data.


PHOTOS: 2013 Billboard Latin Music Awards

For those who weren't so lucky this Valentine's Day, Facebook also released its analysis on which cities are the best for finding love.

Those results are as follows:

Cities with the most single people

1. Detroit, MI

2. Los Angeles, CA

3. New York, NY

4. Miami, FL

5. Memphis, TN

Cities with the largest probablity of relationship formation for a single person

1. Colorado Springs, CO

2. El Paso, TX

3. Louisville, KY

4. Fort Worth, TX

5. San Antonio, TX

Most single females per male

1. Memphis, TN