Complex sentence: He dated Isha Koppikar on and off for 11 years and on breakup with her when she married someone else, he married Kamaljeet Kaur (2009) on a rebound but soon split within 2 months due to irreconcilable differences.
Split into simpler sentences: He dated Isha Koppikar on and off for 11 years. Later he married Kamaljeet Kaur (2009) but soon split within 2 months due to irreconcilable differences.