How can I add a friend?
Step 1: Press Friends in the menu.
Step 2: Start typing the forename or username of your friend in the input field below Making new friends. The full name should appear in a matter of seconds.
Step 3: Select the full name in the list and press the 'make friends'-button.
Step 4: Your friend must log in and confirm this friendship by pressing Friends in the menu (like you did). Then press the green 'accept'-button next to your username.
There you go, you are ready to start sharing and dividing costs.