We are lifting you both up in prayer, trusting in the Lord's goodness and sovereignty. Firstly, we must address a few things. The Bible does not mention girlfriends as there is no courtship process mentioned in the Bible. This passage below shows that it is inappropriate to have a girlfriend for an extended period.
1 Corinthians 7:2 WEB But because of sexual immorality, let each man have his own wife, and let each woman have her own husband.
1 Corinthians 7:9 WEB But if they do not have self-control, let them marry. For it's better to marry than to burn.
The fact that the relationship splintered over a long period may indicate that the relationship may not have been ordained by God. It could also be a sign of not seeking God's will in prayer together.
We must also address the fact that you did not mention calling on the name of Jesus Christ, Jesus, or Christ. It is only by the name of Jesus that we have access to God.
Acts 4:12 WEB There is salvation in none other, for neither is there any other name under heaven, that is given among men, by which we must be saved!
John 14:6 WEB Jesus said to him, I am the way, the truth, and the life. No one comes to the Father, except through me.
Here is our prayer for you:
Almighty God, we come before You in the name of Jesus Christ, lifting up your servant and his companion. We pray that You will heal their hearts and minds, and grant them Your peace that surpasses all understanding. Lord, we ask that You reveal Your will for their lives and guide them in Your truth through the Holy Spirit.
If it is Your will, Lord, we pray for the restoration of their relationship, but only within the confines of holy matrimony. Forgive them and heal the past. We pray that they wait on your timing for any future relationship. We rebuke any feelings of guilt and shame, and we ask that You replace those feelings with Your love and forgiveness. Cast out all fear and discouragement, and fill them with Your courage and hope.
We pray for your salvation and that you are both believing in Jesus Christ and the gospel message.
Draw them close to You, Lord, and help them to seek Your face and Your will above all else. Restore their hope and heal their hearts, in Jesus' name.
We encourage you both to continue praying and seeking God's will for your lives. Trust in Him, and He will direct your paths.
Proverbs 3:5-6 WEB Trust in Yahweh with all your heart, And do not lean on your own understanding. In all your ways acknowledge him, And he will make your paths straight.
Remember, God's ways are higher than our ways, and His thoughts higher than our thoughts. He knows what is best for you both, so trust in Him and wait patiently for His guidance through the Holy Spirit.
Galatians 5:16-18 WEB But I say, walk by the Spirit, and you will not fulfill the lust of the flesh. For the flesh lusts against the Spirit, and the Spirit against the flesh; and these are contrary one to another, that you may not do the things that you desire. But if you are led by the Spirit, you are not under the law.