Complex sentence: After Chris leaves, Dan arrives with one of Sara's missing skates, he says he needs a babysitter and is disappointed when Chris said she's retired, he then confesses that the babysitter was for him.
Split into simpler sentences: After Chris leaves, Dan arrives with one of Sara's missing skates. He says he needs a babysitter and is disappointed when Chris said she's retired; he then confesses that the babysitter was for him.