Sometimes the best thing you can do for a friend is just to be there for them. Let them know that you are there to talk, help, offer support, etc. And, try to do so in a supportive and non-judgmental way. However, if you think that their problem is a more serious one with which they need professional help, do know that there are services on campus that are available to both of you. You may want to talk to Counseling Services (bit.ly/BC-counseling) yourself or you may want to encourage your friend to do so.