Complex sentence: Daphne, on the other hand, develops an instant attraction to Joe and him to her-something that concerns Niles so tells Daphne that he known as'love-him-and-leave-him' Joe with a string of affairs behind him.
Split into simpler sentences: Daphne, on the other hand, develops an instant attraction to Joe and him to her. This concerns Niles, who tells Daphne that he is known as "love -'em-and-leave -' em Joe" with a string of affairs behind him.