Is it wrong

OK so i was staying the night with 4 friends im a guy another guy and 2 girls. I have openly had a crush on one of the girls for 6 months. Background info: I have known her since 2nd grade we were not close until about November of this year and its now June. I have not done anything sexual in my life except kiss 4 girls im a sophmore in highschool, i almost gave 1 a hickey , but didn't and I almost grabbed her butt, but didn't. I sent nudes 1 time and felt horrible, because I am a Christian and i try to live through God but ever since puberty really hit (4 MONTHS AGO) I have been extremely horny and addicted to porn/masturbation. I have tried to stop, but haven't been able too. End of background. Anyways so we're watching a movie(the 4 of us) I start to drift off, wake up and the movie is almost over. I finish the movie then we all go to sleep I was really cold so they all just decided to cuddle up the positioning on this small pull out couch/bed was me on the edge ,my crush, my best guy friend and then the other girl. The girls started rubbing our backs and we all fell asleep. They are all fell asleep, and I woke back up, I noticed my hand was on her breast(pause) have you ever been in a supermarket or large crowd and try to "accidentally" touch ass or tits? ( un pause) my hand on her breast made me incredibly horny, so I kept trying to "accidentally " touch her ass and boob ( i never used the front of my hand just the back, except once very very slightly) and even he upper upper thigh like almost to the crease of her leg. I felt horrible after I did this and so I stopped. I know this is sexual assault and I feel absolutely awful just horrible. I have done something that will weigh on me forever and most importantly scar one of the only friends I had for the rest of her life, because I think she was faking asleep, just as I was.( i think this because she posted something very quickly on snapchat that said I will never be the same and she hasnt been hanging out around me as much).We were both completely clothed I didn't go under clothing as I was trying to be "accidental". So I guess what im asking is 1. The questions above ,2.Does anyone want to barrow my gun and lay a silver bullet in my skull, because that's what I deserve. Ps: im not a troll this really happened and I feel horrible. Also what are your thoughts and opinions on this and anything I can do to make this better. I'm not sure if we can be friends again probably out of the question, but I would like to help her heal anyway she can and as quickly as she can from this. Has anyone been molested and have anything to say to me, because I deserve it. Thank you for your help. Please comment on your thoughts