Human relationships, whether they're platonic or romantic, are dictated by our personalities. There's a reason why you get along perfectly with some people, and can't stand to be in the same room as others. And this applies both in romantic relationships and in bed!If you're wondering why sex with your ex was subpar, maybe your astrological signs just weren't meant to get along under the sheets!You can check out the gallery below to find out which zodiac pairings are the most compatible in bed. You'll see that while some are passionate and romantic, others are more laidback and adventurous. Happy reading!