When it comes to expressing interest in something, there are a multitude of synonyms that can be used instead of the phrase "were interested in." Some examples include "were intrigued by," "were enthusiastic about," "were captivated by," "were drawn to," "were fascinated with," and "were enamored with." Each of these alternatives conveys a slightly different nuance of interest or attraction, whether it be an intellectual curiosity, an emotional investment, or a sheer fascination. Choosing the right synonym can add depth and complexity to your writing, so don't be afraid to experiment with different options to find the best fit for your intended meaning.