Write the next sentence in this paragraph:

How to deal with a friend who has changed
Discuss your problems with a mutual friend.
You might find that you're not the only one having issues with a particular person.
Sharing your problems can make both of you feel better.
Together, you might be able to determine the best course of action. You don't want to be accused of gossiping or talking behind your friend's back, so seek the advice of just one mutual friend.