Yeah. Not science, not data, folks. Just some dressed up anecdotes.

GenePartner tested long-term couples’ HLA [type of gene involved in immune system] makeup and had them fill out in-depth questionnaires. “We asked them whether they find their relationship passionate, about the quality of intercourse, if it was love at first sight,” says co-founder Tamara Brown. With genetic data from 270 couples, the company came up with an algorithm for predicting compatibility based on HLA combinations.

And, 270 couples? Gee, Netflix gave people trying to improve their recommendation algorithm a dataset of 100 million ratings to work with.