This is quite a complicated story please read?

You do sound like you have a crap start in life there but well done for getting rid of the horrid sounding lad , all I say id please don t go the same way as your brothers as drugs are no answer either if you are willing to accept some help you need to either see your gp or find a private counsellor and get some sessions talking things over getting stuff from the past talked through and go rid of as much as possible you need to tell your new boyfriend that if he loves you then has to learn to understand you and listen and talk to you more as this is you and you come as a package not just the bits he likes of you this may help him to mature a little also , but yes your first step has to be get some help if your family are no support is there any other family that you could go and stay with like grandparents ? sometimes just getting out of the horrid surroundings is a step in the right direction to recovery If your friend was shallow enough to even flirt with this boy while you were with him and then blame you I don t know if she is worth trying to re build a relationship up with so finding new and more solid friends are a good start even some of the safe chat rooms on the internet are good in gaining confidence back slowly but don t become too much of an indoor person because fresh air and exercise will help you too , I hope I have been some help as I do understand the depression side of your life good luck