If you are an earth sign (Taurus, Capricorn, or Virgo) you will get along best with other earth signs or water signs (Pisces, Cancer, or Scorpio). Fire is put out by earth as we all know, and earth and air do nothing special, but you can make it if you want to.
If you are a fire sign, (Leo, Sagittarius, or Aries) you will click with other fire signs as well as air signs (Gemini, Aquarius, or Libra) because clearly, they (air signs) light your fire! Water will dim your light fire sign and so will earth. Stay clear from there.
If you are an air sign (Gemini, Aquarius, or Libra) you will do great with other air signs as you will gas each other up. You also pair well with water signs (Pisces, Cancer, or Scorpio) or even with fire signs (Leo, Sagittarius, or Aries). Earth however just won’t do. Stay clear from there as they will stifle, suffocate and bore you.
If you are a water sign (Pisces, Cancer, or Scorpio) you will get along best with other water signs, air signs (Gemini, Libra, or Aquarius), earth signs (Taurus, Virgo, or Capricorn). Fire and water obviously don’t mix.