Two slightly eccentric humanitarians with little concern for details and practical day-to-day living can make for an interesting combination. The water-bearer is often accused of being too detached and freedom-loving, but with a partner of mutual desires the sometime emotional coldness can be better handled. Aquarius is typically devoted to some special ideology and world view, and I suspect this is the area where problems may occur between two Aquarians.
The similarity in self-expression withstanding, sharing sun signs does not automatically make people share deeper values and needs. This is not necessarily a big issue, but Aquarians tend to be very stubborn and particular about their intellectual ideas, and another equally persistent person may cause rifts. Overall, Aquarians are tolerant and liberal, and the match of two water-bearers is often the kind that evolves from friendship and deep sympathy towards romantic love.
Aquarius and Pisces match
The initial exchange of a Pisces and an Aquarian is often one of sympathy and rapport, and perhaps even admiration. The trouble with these companions is that outer similarity and their thoughtful, kind attitude typically masks a much greater inner difference. Both wants to save the world, but for different reasons and in different ways. They can make fantastic partners in dreaming, envisioning creative ideas and humanitarian solutions together, with Piscean imagination perfectly cooperating with the inventive, broad intellectual sweep of the water-bearer.
The thing is, however, that Pisces is motivated by an emotional and above all mystical stance towards people and their world. Pisces sees things as unified, strives after forgiveness above all and has the ability to identify with the most unusual of situations and people. Aquarians still need boundaries and loads of rationality within their world, and are less likely to accept spiritual considerations. The Aquarian can be forgiving, but will seldom completely abandon the feeling of retributive and proportional justice. These partners need moons or sun/moon that comply by element to increase chances of a successful union.