11 facts about flirting that single — and married — people should know

• Flirting is important for couples as well as for singles.
• Below, we've listed some of the most fascinating findings about flirting, according to social scientists.
• For example, most people don't like traditional pick-up lines and men tend to overestimate how interested women are.

What could be more terrifying than talking to someone you're attracted to?

Luckily, social science has figured out what makes flirting work — or not.

Below, we've rounded up some of the most intriguing findings on the art of flirtation, so you can saunter over to the object of your affection with confidence.

This is an update of an article originally posted by Drake Baer.

SEE ALSO: 15 relationship facts everybody should know before getting married

People flirt for six different reasons

In a 2004 review of the literature on flirting, Northern Illinois University professor David Dryden Henningsen identified six different motivations for the behavior: 

• Sex: trying to get in bed
• Fun: treating it like a sport
• Exploring: trying to see what it would be like to be in a relationship
• Relational: trying to increase the intimacy of a relationship
• Esteem: increasing one's own self esteem
• Instrumental: trying to get something from the other person

In that study, Henningsen asked 101 female and 99 male students to write out a hypothetical flirty conversation between a man and a woman, then identify the motivations for the things they said. 

The behaviors broke down along gender norms: Men were significantly more likely to have a sexual motivation, while women tended to have a relational one.

Couples need to flirt, too

Like Tinder, cats, and dying alone, flirting is usually associated with single people. 

But couples need to know how to flirt, too.

After studying 164 married people for a 2012 study, University of Kentucky researcher Brandi Frisby noted that most of them flirted — by playing "footsies" or whispering in their partner's ear, for example — as a means of maintaining and emphasizing intimacy. Oftentimes, she wrote in her paper, married couples flirted to "create a private world with the spouse." 

Some conversation starters are better than others

For a study in the journal Sex Roles, University of Alaska psychologist Chris L. Kleinke asked 600 respondents to rate the effectiveness of three varieties of opening lines in a flirtatious situation: 

• "Pick-up" lines like "You must be a librarian, because I saw you checking me out" 
• Open-ended, innocuous questions like "What do you think of this band?" or "What team are you rooting for?"
• Direct approaches like "You're cute — can I buy you a drink?" 

The responses were pretty evenly split along gender lines: While the men in the study tended to prefer the more direct approach, the women tended to prefer the open-ended, innocuous questions. Not surprisingly, very few people said they preferred the pick-up lines.