Complex sentence: Swara soon learns that Shekhar, Ragini's father, is also her father, and he and Swara's mother, Sharmishtha, were in love 20 years back, but because of certain circumstances were separated.
Split into simpler sentences: Swara soon learns that Shekhar, Ragini's father is also her father. He and Swara's mother, Sharmishtha, were in love 20 years back but because of certain circumstances, they were separated.