Complex sentence: Partly due to Burns's obnoxious behavior, she declares that she does not want to marry either man, which is good enough for Grampa, he grabs Jackie and they hop on a bus and look anxious about their future.
Split into simpler sentences: Partly due to Burns's obnoxious behavior, she declares that she does not want to marry either man, which is good enough for Grampa. He grabs Jackie and they hop on a bus and look anxious about their future.