Sex by Numbers: Dolphins Are Swingers Too Edition

A weekly look at sex and culture, by the numbers.

I hope you’re ready to live on your own, because unless you’re a dolphin (it’ll make sense later, I promise), odds are you’re going to end up alone. With that out of the way, let’s get to our weekly batch of facts.

33: Age at which most people describe themselves as first being “truly happy

50%: Odds a man who suspects his partner of infidelity is correct, according to a recent Australian study

85%: Odds a woman who suspects her partner of infidelity is correct

$120,000: Budget NOM allocated in 2009 to locate “children of gay parents willing to speak on camera” against same-sex marriage

52%: Percentage of Jewish marriages from relationships that began online that originated at JDate

5.5 million: people under the age of 35 who live alone

11 million: people over the age of 65 who live alone

120: Number of dolphins in a recent study detailing their previously unknown “extensively bisexual” behavior

Mallory Ortberg

Mallory resides in San Francisco, California. You can catch her weekly Sex By Numbers column.