No one knows you better than you. However, yours is a viewpoint from only one side. Seeing you at 31 being engaged and about to be married, you now have feelings of distrust and don’t know what to do about it. Lie- leave or stay? I can only ask you if you are happy? Are you happy? Are you happy being with this man or not? He will not make you happy. You must find happiness in yourself first. Then, his presence will compliment your happiness. If you are not happy then his presence will only make for more grist for the mill. You then will only grind out more drama. If you do not think you can get over these deceptions then maybe it is time to be alone? Maybe you do not want to be alone? Can you survive a collision with yourself? I wish you well. And hope you find the happiness you deserve.