All lives you receive are stored in specific tabs.

To find lives you've received in the Messages tab:
1. Tap the life icon (it's to the right of your avatar).
2. Tap Request Lives or Send Lives. You will see a window with the corresponding tab.
3. Select the Messages tab.

To find lives you've received in the TastyMe tab:
1. Tap the TastyMe icon.
2. Select the Gifts tab.
3. Select the Received tab.

Please keep in mind that the number of lives you can send to your friends is limited to twenty.
The number of lives you can receive from visiting restaurants or win at the Wheel of Fortune is infinite.

If you already have the maximum number of lives, you cannot use an additional life. But don't worry, it won't disappear. You can use it later.