most probably she will do the same.....
If your friend is selfish; self centered; nasty or moody then this is not a friend, but a toxic relationship and you should end the friendship. If this person was a good friend at one time and has become moody; not there for you; seems sad or depressed then as a good friend you should ask your friend what the problem is and that perhaps you can help. Good friends don't end friendships when the going gets tough off and on. You have to make the decision as to whether to face this problem with your friend head on or realize it's a toxic relationship and end the friendship.
You should go visit him, it sounds like hes depressed and needs his best friend.
You can be depressed at that age. It just depends on how your life is affected. If they are looking for attention, this will blow over soon.
You can console a friend by joking around or start talking about the problem. Sharing the problem reduces the intensity of it.
If you have been feeling real depressed because you got really angry at your friend and have not been talking to her lately you should apologize for getting angry with her if you are sorry for it, or explain to her why you were angry and see if you can work it out.
You need to know how he/she feels. when he/she is depressed for example, you talk to them as a friend. Try to avoid any move that a friend can't make to them. just talk as you talk to your friends.
If you're worried your friend will hurt themselves than it is best for you to all authorities.
Tell them you are paying.
Well if your friend is self centered and thinks that everything is abput him/her then they are vain. If you are asking if you should call them that then you should consider the question.. "is this person really my friend?" cause when you say that you don't know what their reaction might be! lol
you should realise him that the girl is not right for him and he should move on in life.
Yes, they can. They become listless & don't bounce like they should. Stimulating their senses & minds can generally help, or getting them a friend.
If you are around a depressed person for too long, it might catch on. just try to cheer your friend up and talk to them about whats making them depressed. try to help them & make sure they know you will always be there for them.