How can I prove to him that I am not cheating?

how can I prove to him that I am not cheating and I have never cheated and all I want to know is what can I do to gain his trust again I have tried to tell him but he won't listen I have told him that I haven't cheated on him and that I am not cheating on him in tears and he still doesn't trust me what can I do
How can I prove to him that I am not cheating?
Post Opinion