Sagittarians are quite sensitive in nature and always seek to gain new insights in a relationship. They also have fiery emotions hidden behind their cool façade that is something common with an Arian. If taken into consideration, the Aries and Sagittarius are like two sides of the same coin. Both of these signs have great pride in them.
The downbeat aspect of Aries-Sagittarius relationship is that both signs are dominating and like to rule. This is prime reason of problem between them. Both the signs seek individuality and freedom of space. This can also lead to hot arguments that can mar the happiness between them. But silver lining to this is that both are quick to forget and forgive.