People born in January are hard workers with strong opinions and you're not afraid to let people know what you think.

And there was this, an eye-catching display of dating data, and arguably the most interesting of the lot: The chart, which comes from a longitudinal study by sociologist Michael Rosenfeld, says a lot about how romance has evolved over the past 60 some odd years.

It shows the rise of online dating (which has only been more pronounced for same-sex couples), clearly depicted by the darker of the two blue lines above (notice not only its furious ascent, but also its relative importance—more than 20 percent of straight couples reported meeting their partners online in 2009, the most recent year for which data are available).

Had she met him after he watched the video, their three years of pre-wedding dating would have been condensed into about a week, in which LBL would be wearing stiletto heels and a bikini, and Now Husband could assess her Crazy quotient as she fell over repeatedly while trying to suck in her stomach and walk in the stilettos at the same time.

That way, he was willing to waste a lot of time discussing books, movies, politics, and social issues, while she was dating him.

Whether you think they're accurate or not, you have to admit they're pretty hilarious!

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The ‘Hot’ axis is measured on a scale of 1 to 10, while the ‘Crazy’ axis runs from 4 to 10, “because there is no such thing as a woman who is not at least a 4 Crazy,” Mc Lendon says. In a nutshell: In order to be a perfect woman, you have to not be a woman.

The very top spot, meaning a woman who is insanely hot AND not at all crazy, is a guy, in other words, a tranny.

Both show how incredibly changed the landscape for relationships and dating is compared to even 20/30 years ago, and how quickly online dating has become one of the main ways people meet new romantic partners.

It’s also interesting that while online dating is seeing a sharp increase, all the other ways of meeting – aside from “at a bar/restaurant” – are on a downward trajectory. Born in Newcastle, he has an English degree from Queen Mary, London and after working for the NHS, trained as a journalist with the Press Association.

The graph was posted by Paul Kirby, a visiting professor from the London School of Economics, who accompanied the image with a message saying: “A remarkable sociology of the last 70 years in one chart.