Complex sentence: His sex life was prodigious, and he frequented prostitutes, contracting syphilis, while he also greatly enjoying the pleasure of platonic female company, all the while keeping tendencies toward homosexuality and sadism in check.
Split into simpler sentences: His sex life was prodigious, and he frequented prostitutes, contracting syphilis. He also enjoyed the pleasure of platonic female company, and kept his tendencies toward homosexuality and sadism in check.