There are many elements in a person’s chart that need to be taken into consideration to give a flatline answer but Water signs (Cancer, Pisces and Scorpio) have different ways of thinking than most Fire signs (Aries, Leo, Sagittarius). Although they have a ton of things to offer, Water signs are highly about feelings and can come off as very attached or needy (at times). Fire signs like to explore life, go places, do things….and this can make Water signs feel abandoned or left out. Fire signs are also more aggressive, which can be a bit much for Water signs. They can be compatible, but communication can be difficult.
It’s a part of their nature, to know things and figure things out. They play detective better than a lot of people too.