You can send extra lives to your friends. Use the Inbox tab of the in-game tablet or the life icon in the top left corner of the screen to send or receive lives.

If you want to send lives:
1. Open the tablet in the bottom left corner of the screen.
2. Go to the Inbox tab.
3. You'll see a list of the friends that have asked for a life. Click Send to send them a life.

Or:
1. Click on the Lives icon in the top left corner of the mansion screen.
2. Click on the Send Lives button.
3. In the pop-up window, select a friend you want to send a life to and click Send.