Cancer is a water sign that's ruled by the moon, causing these sensitive beings to feel the influences of the lunar cycles whether they like it or not. Cancers are emotional, empathetic, and highly imaginative people. They can be withdrawn and mysterious at times, only opening up to those closest to them. They aren't a sign that's interested in casual encounters and one night stands. Although cautious with their trust, once you make it into a Cancer's heart, they're loyal and passionate friends and lovers.