Mercutio's attitude towards Romeo's love for Juliet in Act 2, scenes 3-4 can be interpreted in different ways. Some may argue that Mercutio is supportive and encouraging of Romeo's newfound love, while others may perceive his remarks as teasing or playful. It's important to consider Mercutio's character as a witty and unpredictable friend. He often uses humor and wordplay, so his comments may not always reflect his true feelings. Ultimately, it's up to the reader or viewer to interpret Mercutio's intentions in those scenes.