Basically the 12 signs are divided into trios of 4 elements: earth, air, water and fire.

Capricorn, Taurus and Virgo are earth, and Aquarius, Gemini and Libra are air. I’m a Capriquarius cusp and you a …Virgbra? idk how to pormanteau those two - .-

Suppossedly the same elements are compatible or such idk I’m not the Stein of astrologism, I just read Homesuck >:T