We are truly sorry to hear about the pain and heartache you are experiencing. First, we want to remind you that God's design for relationships is holy and pure.
It seems there is inappropriate behavior and deception being practiced by the woman you are courting.
First we want to clarify how to approach God. It is only through Jesus Christ and His sacrifice on the cross that we have redemption and are able to talk to God. You did not mention Jesus so we hope this relationship is not blocking your view of Him. This is the most important thing to consider in dating.
In 1 Corinthians 6:18 WEB it says, Flee sexual immorality! Every sin that a man can do, such as adultery, fornication, uncleanness, lasciviousness, idolatry, witchcraft, hatred, variance, emulations, wrath, strife, seditions, heresies, envyings, murders, drunkenness, revellings, and such like, is outside the body; but he who commits sexual immorality sins against his own body.
From your description, it appears that the woman involved is not behaving in a way that aligns with biblical principles.
If this woman you are courting has been dishonest and involved with another man, this is a serious issue that needs to be addressed with repentance.
As for you, we encourage you to seek God's will and trust in His timing. You are not married to this woman, so you have not entered the covenant where you need to stay married. In 1 Corinthians 7:39 WEB says, A wife is bound by law for as long as her husband lives; but if the husband is dead, she is free to be married to whomever she desires, only in the Lord.
We pray that God will heal your broken heart and guide you toward a godly spouse who shares your faith and values.
Dear Lord, we come in Jesus Name. We lift up this man. We pray for him to see You clearly. We pray for him to not be consumed in his heartache. We pray for the woman he is courting to repent and turn to You. We pray for him to find a wife You have intended for him. We pray for his relationship with the woman he is courting to be restored if it is Your will. We pray for him to be able to move forward in love and service You. We pray for him to forgive as You forgave us. All glory and honor to You. All praise in Jesus' name. Amen.
We encourage you to seek godly counsel and support from your local church community during this challenging time. Trust in the Lord with all your heart, and do not lean on your own understanding. In all your ways acknowledge him, and he will make straight your paths in Proverbs 3:5-6 WEB.
We will be praying for you and this situation.