Libra and Aquarius make lovely friends and lovely lovers, and they can combine both. They can combine a romantic affair with a great melding and meeting of the minds. Both of them are air signs and in astrology air stands for thinking, communication, ideas, creativity, of an explorative nature. Both of them are outward in their energies. They're not withdrawn and seething, and intense. Both of them tend to look outward for stimulation and for knowledge.
The Aquarian tends to be a little more stubborn then a Libran. Aquarius is known for being very fixed in its opinions, and very independent. Libra is more the compromiser because Libra wants to be in a relationship and be part of a strong twosome. What Libra wants in this twosome, actually, is someone who is strong and can take care of the Libran.
Whether male or female, the Libran likes that sense of someone else will do the hard work. The work may be emotional. The work may be physical. But Libran is not too interested in nitty-gritty. Loves the romance and the fantasy of life and tries to create a life that contains that. But in general, as air signs, as people who can communicate and who love ideas and being out in the world, these two make lovely lovers and fabulous friends.