Is Zodiac Compatibility Complete BS, Or What?

Star-crossed lovers, or something like that

Collage photos via Getty Images; Illustrated by Liz Riccardi

Relationships all boil down to one thing: compatibility. Does everything you are work well with everything your S.O. is? It would be great if there were a tried and true way of testing the waters without flirting with the idea of heartbreak. Of course, there are ways to get more insight into your relationship. Some use those kitchy love calculators the internet plays home to, while others consult the zodiac, because the stars don't lie. (Or do they?)

Certain signs work better with certain signs. Any individual with access to a tabloid magazine or the internet knows this to be (maybe) true. But, really, how true is it? Astrologer Christie Craft tells us zodiac compatibility runs so much deeper than sun signs. Having your star charts read isn't a casual after work event, though. So, for the majority of us, taking into account our sun sign is as close as we'll get. With that said, relationships are complex and the zodiac doesn't hold all the answers. It can be a guide, though—for fun or for real. We spoke with four couples: two who challenge the zodiac compatibility chart (below), and two that fall within it, to find a not-so-scientific answer to the age-old question of how valid zodiac compatibility really is. Turns out, it's complicated. Thanks, stars.