Whether it happens during a drinking game with friends or a heart-to-heart with your boyfriend, the question is eventually going to come up: How many people have you had sex with? Sometimes you’ll ...

With What’s Your Number? opening in theaters this week, longstanding questions about how many sex partners people have, how many is too many, and differences between the sexes are back on the table.

A third of Americans have lied to a significant other about their number of sexual partners, according to new research. A study of 2,000 Americans who’ve had sex found that 32 per cent have fibbed ...