Why Hrithik Roshan's marriage ended with a sour note

From learning roller-blading for Dhoom 2, taking sword-fighting lessons for Jodhaa Akbar to interacting with paraplegic patients as a preparation for his role in Guzaarish, the 40-year-old leaves no stone unturned. Both Hrithik and his wife Sussanne, who are separated now sport an identical tattoo --a six-point star with a red circle in the centre on their wrist.