You are both very strong individuals and there may be clashes especially about personal matters. There is certainly a strong attraction and sense of mystery between you too, due to your differences. Cancer may be too emotional for Libra at times and Libra may appear to be too objective and detached. Libra is the expert guide in the relationship but Cancer likes to be in control of the personal domain, so may challenge control. The friction could be seen as magnetic attraction between your differences! Libra likes harmony and Cancer may tend to become emotionally manipulative. Once the boundary lines in the relationship are clear to both however, this could be a good and very dynamic relationship.