"What a typically Libra thing to say." Merlin didn't believe in these armchair psychics and their newspaper horoscopes either, but he did believe in the stars and what they could tell him about the universe, and by extension, humanity. He also believed in ribbing people who deserved to loosen up a bit, especially young mortals who believed in order and stability.
"What do you need, before you get going? I just have to go check on my potion, will you be alright for a few minutes?" he asked, wanting to give Rosario some time to settle in. "How long were you planning on staying today?"