Prayer for my Husband David

Please help me pray for my husband who has no religion, he is so lost, please Holy Spirit touch my husband's heart and make him realize that what he is doing is wrong (having an affair). I'm deeply hurt because he blames me for everything. Please enlighten him my Lord to do the right thing. I still love him so much. I don't want to break up our family. He said he can't forget this woman. He wants this woman and me as well which i can't accept ..Please Lord, guide me and show me what to do..Thank you so much.