Complex sentence: Sanjeev Kumar never married but was involved with actress Sulakshana Pandit, whom he did not marry, having been turned down by Hema Malini, with whom he was in love at the time.
Split into simpler sentences: Sanjeev Kumar never married but was involved with actress Sulakshana Pandit, whom he did not marry. Having been turned down by Hema Malini, with whom he was in love at the time.