Taurus man Sagittarius woman pair's approaches to life can either be complementary or sources of stress if either cannot learn to understand and accept the other.
Conversely, Taurus is down-to-earth and needs stability. Sagittarius natives rely upon feelings and impulses to direct them through life, while Taurus is practical and concerned with efficiency.
Provided both take care to engage in reassurances that the relationship is special and important...and Taurus man in particular will need this...then things could likely run quite smoothly.
Taurus man Sagittarius woman combination is rather odd, at best...one where Taurus man trait for possessiveness is coupled with the Sagittarius love of freedom. Thus, the Sagittarius partner will probably find the relationship somewhat stifling and difficult to cope with. Characteristically, Sagittarius woman is frank and generous and her nature will likely clash with the inherent jealousy of Taurus man.
Still, with some understanding and effort, this could become a union of harmony.