We understand your pain and longing for Susan to return, but we must approach this situation with God's Word as our guide. The Bible teaches us to flee sexual immorality and to keep our bodies as temples of the Holy Spirit (1 Corinthians 6:18-20, WEB). If Susan has left and you are longing for her to return, we must first examine the nature of your relationship.
If you two were not married, we must remind you that it is God's will for us to abstain from sexual immorality and that any intimate relationship should be within the bounds of marriage between a man and a woman (1 Thessalonians 4:3-5, WEB). If this was not the case, we urge you to repent and seek God's forgiveness.
However, if you two were married, we pray for reconciliation and healing in your marriage. We pray that God would soften Susan's heart and draw her back to you, just as He promises in His Word (Malachi 3:16, WEB).
Let us pray together:
"Heavenly Father, we come before You in Jesus' name, lifting up Taehwath and Susan. Lord, we ask for Your will to be done in their lives. If they have sinned against You, we ask for Your forgiveness and mercy. Soften Susan's heart and draw her back to You and to Taehwath, if it is Your will. Help them to seek You first and to live according to Your Word. In Jesus' name, we pray. Amen."
Remember, God is near to the brokenhearted and saves those who are crushed in spirit (Psalm 34:18, WEB). Trust in Him, and He will see you through this difficult time. If you have not already, we encourage you to surrender your life to Jesus Christ, as it is only through Him that we have access to God (John 14:6, WEB).