Suggest Treatment For Cocaine Addiction

Hallo, so i have been dating a cocaine user ( i am 22 and he is 27) for about 8 months or more and he told me this 2 or 3 weeks before Eve. He said he wants to stop it and he went to a doctor and i think he succeeded. He said he didnt take any for more than 3 weeks. But i am not convinced. I am afraid he will return to it and lie about that. I really do like him but i am not willing to accept that in our relationship. He is a good person but this addiction wont let me get closer to him and know him well. This is not good for both of us and i find it a big trouble . By the way he told me he has been dealing with it a year ago this means around late 2016 or maybe later and he was taking it once a week. I searched about this in google and tried to find the solutions. And i am even willing to break up with him if he Continues with it though i love him a lot. I wish you can advise of what i or he can do. I will apreciate your help