Really repent and ask God for forgiveness you. Start reading the bible and praying to Him in Jesus name and He will show the way to His path. There is always forgiveness from God as long as you really are sincere and give Him your heart. Allow Him to guide you from now on, He will bring you out of the darkness into His light.
Lord guide this person to you and change their life completely as you make them a new creation in you. In the mighty name of Jesus Christ our Lord and Savior I pray. Amen!