Use touch to your advantage.
A 2006 study conducted in France with 120 women found that a light touch on a woman's forearm was associated with a greater chance that the woman would give her phone number to the man asking for it than if he hadn't touched her briefly.
Of course, unwanted touches won't do you any good.
In a survey reported on ScienceOfRelationships.com, 695 adults rated their best and worst kisses. Researchers discovered that the majority of adults ranked their most memorable, best-of-the-best kiss as one with passion.
Passion actually won out over feeling in love when kissed, a long-anticipated kiss, a surprising kiss, or just a good technical kiss with all of the right lip action.
Consult a female friend.
Falling in love may happen rather fast, but staying in love can last much longer. Sometimes, however, it's hard to tell if your relationship will stand the test of time.
That's where your female friends can offer a healthy, unbiased perspective. In one small 2001 study involving 74 couples, researchers found that female friends were relatively more successful than male friends at predicting whether a given relationship would still be going six months later.
Say "I love you" before having sex.
If you're interested in making a relationship last, saying those three little words can be a key factor.
In the early 2000s, Illinois State University communications professor Sandra Metts studied 300 college-age men and women to find out if having an emotional connection — in particular saying "I love you" before having sex — could have a positive impact on the trajectory of the relationship. Turns out, it did.
What's more, Metts found that couples who had sex first and said "I love you" after had a negative experience. The introduction of that conversation after sex was often awkward and apologetic.
Beware of artificial covers like clothes and makeup.
People who are narcissistic are better at making themselves appear outwardly attractive, according to a 2012 study by two researchers at Washington University. This type of person also appears to be more successful at being confident and humorous during a first meeting — two other qualities usually considered attractive.
But as Scientific American points out, narcissists' popularity quickly wears away with time. While not everyone with these traits is a narcissist, it's always good to keep an eye out if you don't want to end up dating someone who's incapable of loving anyone more than themselves.