I slept with a group of friends. I'm ashamed.
Why didn't you just say no?
I was afraid that no one will ever want to be my friend again.
Maybe that was a message that you shouldn't proceed with that course of action? Hopefully you learned something from the experience.
I think it's not such a big deal, I did it because I wanted to make sure that they liked me as a friend.
I think that you need to stick with your morals. There is no reason why you should engage in behavior that you know that you are going to regret.