How do Lives work?
You can have a maximum of 5 lives. You only lose a life if you do not successfully finish a level, and each life is renewed after 30 minutes. 
You can also get more lives by asking your Facebook friends or using gold coins to buy them. 
 
How do I ask Friends for Hearts?
You must have 4 or less lives.
  1. Tap the "+" button, located next to the Heart icon.
  2. Tap the "Ask Friends" button.
  3. Search for your friends and then tap "Ask".
How do I receive Heart requests?
You must have 4 or less lives.
  1. Check your in-game messages by tapping the envelope, located at the bottom left corner.
  2. Search for your life request and then tap "Accept". The life will be added to your inventory.