What do you look for in a romantic partner?
A casual flick through the many dating apps and sites available will reveal even the least fussy of us still have certain criteria.
Good sense of humour, kind to animals, six figure salary - the barometer seems to be wide and varied.
Or is it?
Apparently, women look for one thing and one thing only in our search for a significant other - and it will make you squirm.
A study has explored what it is which makes women choose a male partner, and it has nothing to do with a GSOH _Good sense of humour.
What women want?
Instead, what women are supposedly after is a man who resembles our brothers.
Just think about that disturbing little nugget for a second.
The study, which was was published in The Evolution and Human Behaviour Journal, asked participants to look at photos of men and then rank them according to who bore the greatest resemblance.
The scientists included photos of the volunteers' partners and brothers, which they had also sent in.
What the researchers found was "clear evidence for perceptual similarity in facial photographs of a woman's partner and her brother."
The results aren't easy to hear
"[Our findings] were not a rule or true of every woman but we do find that, at levels greater than chance, partners did show some subtle resemblance to the women's brothers," Lead researcher Tamsin Saxton told The Independent .
Tamsin also suggested "familiarity seems to be attractive", meaning people are attracted to those with similar views, interests and tastes, in which case "maybe that is something that is coming into play."