Headcannon that Pyrrha did not like Weiss at first, but was too nice to say so. Not due to jealousy over Jaune or anything like that, but because Weiss immediately does exactly what Pyrrha explains in Vol 2 she doesn't like. She puts Pyrrha up on a pedestal. She talks up Pyrrha's skill and fame and decides, for Pyrrha, that Jaune's not good enough for her. Talk about a bad first impression.
Even funnier if you interpret Weiss as having a crush on Pyrrha. Her stated reason for rejecting Jaune is because boys only want the perks of her last name and she assumes Jaune is the same. However, Weiss initially does, rather hypocritically, think of Pyrrha more like an asset than as a potential friend. Weiss is interested in how Pyrrha's strength can help her, rather than in Pyrrha as a person. Early Weiss was so shallow lol.
