You don’t have to wait around for time to tell if you’re compatible with your mate anymore – now, a sample of your saliva can have science figure it out for you. Because what’s more romantic than that?

The “Couples Kit” from Instant Chemistry comes with tests for six genes in the immune system that are linked to physical attraction, and four that are associated with personality traits like empathy and adventurousness. It also comes with personality tests. And they use all that info to create a 30-page “love manual,” which explains all the details of your compatibility with your partner.

But getting a 30-page report about the harmony in your relationship isn’t cheap. Right now the kit’s on sale for $149, down from the usual $199. So if this sounds cool to you, grab it while there’s a discount.

The whole thing might seem a little strange, but like their website says, “Relationships grow, but your DNA and core personality stay constant.” And since people aren’t always great at picking the best partners for themselves, maybe science will do a better job.

And yet, we still don’t have a cure for cancer? Oh.

Source: Glamour