You can get with this, or you can get with that

I am having a major delimma right now. I cannot go into detail but it is ripping me apart inside. I have something to tell someone that I was not supposed to tell them, and I have to. HAVE to. This not only effects me, but this other person, and one other person. Something is happening and this secret that I've held for 7 months is about to come out. This will change things to no extent and I am freaking out. I feel hurt and angry and betrayed. This sucks. I don't know what to do. I'm scared.