1) Definitely stare deep in their eyes

Oliver Burkeman’s Help! How to be slightly happier and get a bit more done pointed me to evidence that staring into each other’s eyes really does increase attraction:

In two studies, subjects induced to exchange mutual unbroken gaze for 2 min with a stranger of the opposite sex reported increased feelings of passionate love for each other.

2) Still early in the relationship? Talk about travel, not movies.

Via Quirkology: How We Discover the Big Truths in Small Things

When talking about movies, less than 9 percent of the pairs wanted to meet up again, compared to 18 percent when participants spoke about the top topic—travel.

3) Want to look more attractive?

How long does it take to determine if someone is hot? Thirteen milliseconds. Really: thirteen milliseconds.

Via Do Gentlemen Really Prefer Blondes?: Bodies, Behavior, and Brains–The Science Behind Sex…