Hoping and waiting

My name is Loren and i been with my boyfriend for 18 teen years, and have four kids with him a 17 teen year old , 16 teen ,13 teen and a 6 year old. He has been using heroin about 13 teen years. At first i was in denial i couln't beleive it. I had people and family tell me. And i ask him and he became into denial about it. He has stole from me and our children. And not come home for days. He got so bad that he became violent and he was not the man i fell in love with. He was a total stranger to me and our kids. I still loved him because i know the man that he was before all of this. I couldn't give up yet. I have had him arrested and section through the court. Sent him many times to detox and went with him to na meetings, also he has done methadone and did really well for about a year until he got kick off of it so he went back to the streets. We had him back for a little while and started all over, and over again. Now i have my oldest teenagers acting out in school and at home. And father coming and going on all types of drugs now.I came to my breacking point now! I am not tired no more i am fed up. When is it going to give....