Complex sentence: She left Vigor to start a new agency with her then-boyfriend, married coworker Rutabaga Rabitowitz, but after recognizing his duplicity and confronting her fear of being alone, she ultimately decides to leave him and run the new company on her own.
Split into simpler sentences: She left Vigor to start a new agency with her then-boyfriend and coworker Rutabaga Rabitowitz. After recognizing his duplicity and confronting her fear of being alone, she ultimately decides to leave him and run the new company on her own.