The key to these questions is creating closeness by gradually revealing increasingly personal information.
Basically, whatever you do, don't talk about the weather. The deeper the questions you ask and answer, the study found, the more likely a couple is to fall in love.
4. Get a dog
Including a dog in your Tinder profile is a well-worn trick to get more matches - and this is why.
A 2015 study suggests that your furry friend can help make you appear more attractive, though this is far more effective if you're a man.
The study authors theorised:
Put in terms of evolutionary and life history theory, females allocate a higher proportion of their reproductive effort to parenting while males expend more energy on mating.
5. Eat carrots
This one takes a lot of carrots - probably more carrots than you'd ever actually want to eat - so, maybe you should save this for a once-in-a-lifetime event.
A 2011 study got volunteers to rate the attractiveness and healthiness of 51 Caucasian faces. They found skin with a yellow hue helps you look more attractive and healthy, and apparently not like a Simpsons character.
Carrots, which produce carotenoids (aka yellow pigments), make your skin more yellow
6. Women, rock some red
Yep, it's a pretty easy swap that can instantly make women more attractive to men.
A study found that men are more likely to be attracted to women wearing red rather than, say, green.
Joe Thoden, founder of the personal style site Your Color Style, told Business Insider that red:
represents passion, power and sensuality.
7. Nod your head
Nodding your head can make your personality more attractive and likeable by up to 40 per cent, according to a study, as it makes you appear more approachable in social interactions.
8. Women, arch your back
A slight arch in women's back makes her more attractive, finds research.
This might help explain why high heels are so popular, as they cause women to arch their backs slightly - and only a small change in how much a woman's back is arched is needed to make her more attractive to men.