Complex sentence: The older Gonzo did have a crush on Miss Piggy but this didn't last long, but most of baby Gonzo's actions revolve round the fact that he is in love with Piggy.
Split into simpler sentences: The older Gonzo did have a crush on Miss Piggy but didn't last long. But most of Baby Gonzo's actions revolve round the fact that he is in love with Piggy.