Complex sentence: Dave was once attached with local Game Master Patty Gauzweiller; he later broke it off but she still has feelings for him, leaving him a target for her obvious flirtation tactics.
Split into simpler sentences: Dave was once attached with local Game Master Patty Gauzweiller, but later broke it off. However, she still has feelings for him, and he often finds himself a target for her obvious flirtation tactics.