Sagittarius will easily bond with Aries and Aquarius, said both Mesa and MacGuire. "They've got that 'you only live once' mentality, and the people they surround themselves with should be just as freedom-loving and outgoing. Highly compatible with sister fire signs Leo and Aries, but they can't help but find Aquarius' detached and eccentric personality totally irresistible," said Mesa. "Sagittarius is very optimistic and excited about exploring the world; in Aries, they find the perfect partner in crime who is up for anything and at a moment's notice," said MacGuire, while "Aquarius can lift them up and expand their minds without tying them down to anything — even their ideas, which can shift at a moment's notice for philosophical Sagittarius."