It depends on what it is but most of the time no because that isn't the best friendship to have.
It should be photo where you are relaxed and while doing something that you like, or it can be some good photo with your friend.
Because one friend is doing something the other friend is not.
It may have just became a habit from them or they like the adrenaline rush from doing something illegal. You should talk to them about it.
Nothing. Or thank friend A for doing something that friend B was afraid to do.
illegal
Not doing something that one should have done is Error of Omission. Doing something that one should not have done is Error of Commission.
Just do something fun
Yes, a friend should report another friend if they broke a serious law even though other friends may call you a 'rat' or other names. You would be doing your friend a favor. However, you do run the risk that you will lose that friendship, but you did the right thing.
If She tells YOU that you have a boyfriend... surely you're doing something wrong?
i would give them something you enjoy doing together or something like a friendship bracelet
Nothing
It depends what you are shy of doing? If you are uncomfortable in doing it, don't do it. If you are only shy, take you time and when you are ready, you will do it. Either go ahead and get it done and over with or get a willing friend to tell the other person what you want to do. Hope this helps.