Eden,
Perhaps you could just tell them that you have something important to tell them. That you value their friendship and want to be honest about what has been going on in your life. You could ask them if they want to hear your story and if they have time to hear it. Then you could briefly tell them what has been going on with you. Ask for their support. They will want to know how they can help you.
You may get a shocked reaction from them, they may need time to digest this and process it.You could simply ask if it would be ok to call and talk when you are having a rough time, to listen to you, maybe even come over to just be with you. To help you feel safe.
I think you are wanting to trust them.
It is very important to have friends that you can trust and be honest with.
I wish you much luck. Friends can be so helpful and supportive. I hate to say this But don't expect that all 7 of them will be able to support you. And you will probably have to have several conversations about this. Time is your friend.
(((((HUGS))))
bizi