Complex sentence: When asked about Kathy's bruises, he claims that they are the result of their rampant sexual encounter and suggests that Pete is a violent man and Kathy has lied to avoid his wrath.
Split into simpler sentences: When asked about Kathy's bruises, he claims that they are the result of their rampant sexual encounter. He also suggests that Pete is a violent man and Kathy lied to avoid his wrath.