Answer: 2. No
Step-by-step explanation:
In Act 1, scene 5, Romeo has already met, fallen in love, and kissed Juliet, meaning that his love for Rosaline has faded. But Benvolio doesn´t know about Romeo´s new love interest.
At the beginning of Act 2, Benvolio and Mercutio are trying to find Romeo without success. Mercutio makes fun of Romeo’s love for Rosaline, showing that neither he nor Benvolio are aware of Romeo´s new feelings.