Complex sentence: The brothers and girls end up getting into an argument over who is more at fault until Eric starts yelling at all of them for being immature and gives Jeanie an early honeymoon present-hot air balloon ride tickets, even though he is afraid of heights.
Split into simpler sentences: The brothers and girls end up getting into an argument over who is more at fault until Eric starts yelling at all of them for being immature. Eric then gives Jeanie an early honeymoon present: hot air balloon ride tickets, even though he is afraid of heights.