If you need numbers for your next trivia night: Season 1 is flirting. Season 2 is the big “I love you” that nobody hears. Season 3 is jealousy over Rachel and the blue hat gift.
Season 4 is the nightmare of him dating Nicole. That’s the “will they ever get a clue” season. Then—bam—Season 5, Episode 3. The kiss that broke the internet (or at least early 2000s fan forums).
A fun fact: that rainstorm was fake. They used a fire hose. Luke’s waterlogged jacket was actually a choice. He stood there, soaking, for twelve takes. Dedication.