At first, lovesick and infatuated with Rosaline but after he'd met Juliet hopelessly in love
This would be Professional. This person does not show any sign of aggression or anger in this passage. This person isn't using the passage in a funny or sarcastic way and brought up the fact that they would like to work with the company in the future. He told the company he appreciated the time they gave him making this very professional.
