"... In spite of the often intensely magnetic, forthcoming and open personality of the more extrovert kind of Aquarian, and of their desire to help humanity, neither type makes friends easily. They sometimes appear to condescend to others and take too little trouble to cultivate the acquaintance of people who do not particularly appeal to them.

They do not give themselves easily - perhaps their judgment of human nature is too good for that - and are sometimes accounted cold. But once they decide that someone is worthy of their friendship or love, they can exert an almost hypnotic and irresistible mental attraction on them and will themselves become tenacious friends or lovers, ready to sacrifice everything for their partners and be faithful to them for life. However, they are sometimes disappointed emotionally because their own high personal ideals cause them to demand more of others than is reasonable."

-http://www.astrology-online.com/aquarius.htm