We understand your urgency and desperation. There is a lot to discuss from your request. Let us come before the Lord in prayer, guidance, rebuking, and encouragement.
Firstly, you mentioned that you were asking in Jesus Christ's name and this was very appropriate. It is only in His name that we have access to the Father. Acts 4:12 says "There is salvation in no one else, for there is no other name under heaven given to men by which we must be saved." Also, Colossians 3:17 says, "Whatever you do, in word or in deed, do all in the name of the Lord Jesus, giving thanks to God the Father through him." This includes marriage and relationships.
Also, you have asked us to pray that you may bring salvation to daa. While it is commendable that you desire his salvation, we do not have the power to convert anyone. We can share the gospel and be a positive influence and the Lord, Himself, is the one that brings salvation to a person. Your role is to live a life reflecting Jesus and share the message of salvation to daa. Let God do the work of converting his soul. Remeber that only the power of God can save daa and convert him into a Christian Believer. There is no guarantee of anyone being saved until they actually do surrender to Jesus and become saved. Keep in mind this scripture from John 16:8 "When he, the Spirit of truth, has come, he will guide you into all truth, for he will not speak on his own authority, but whatever he hears he will speak. He will declare to you things that are coming." and the following verse John 16:9 "He will convict the world about sin and about righteousness and about judgment." This does not mean to disregard your efforts and it does not mean that God cannot work in the relationship for the benefit of a future marriage to daa. We need to pray and ask for guidance to interact with daa so that God may work in his heart for his salvation. That is why, 1 Peter 3:1-2 says "Wives, in the same way, be in subjection to your own husbands; so that, if any donβt obey the Word, they may be won by the behavior of their wives without a word; seeing your pure behavior in fear."
Secondly, concerning your relationship with daa, we see this as a possible courtship for a future marriage. We must be aware of the warning found in the scriptures regarding marriage to unbelievers. 2 Corinthians 6:14 "Donβt be unequally yoked with unbelievers, for what fellowship have righteousness and iniquity? Or what fellowship has light with darkness?" Even so, God can work in this courtship and open the door for marriage but we must not ever forget to be living in accordance with God and His principles of marriage as found in the Bible. If daa refuses to surrender his life to Christ then you are not to court or marry daa as he may end up making decisions that will leave you and your possible future children in a difficult situation.
With all of these issues covered, now we can pray with you through your current life situation with daa.
Heavenly Father,
We come before You in the name of Jesus, seeking Your will and guidance for Anonymous and daa. We pray that You would bring into daa's heart that he would submit to Your will and be saved from His sins. This would lead him into being a Christian Believer. Lord, help Anonymous to be a positive influence and share Your message to daa. Help both to seek You first in prayer and in the Bible in their relationship to seek marriage. Help them in their dealings together so they may see Your good and perfect plan for their life. Convict them both so that they will not be sexually active until they are married. Help both to be ready for marriage in preparation and to live together in holiness. Give them both hope in Jesus for their future, their dreams, and their expectations. Break any false commitments between daa and any other people outside of You and Anonymous and the potential for marriage. We rebuke any sexual acts in this relationship since it is forbidden in your word and repair the damage caused be sexual contact. Do not let this happen anymore in this relationship.Do not let your Holy Spirit dwell in an unequal yoke as it will cause stress for Anonymous and possible divorce for marriage. Help her to remember 1 Corinthians 7:15 "Yet if the unbeliever departs, let there be separation. The brother or the sister is not under bondage in such cases, but God has called us in peace."
Lord we pray for their peace, joy, hope, and guidance, in Jesus name. We ask this and pray this in Jesus Christ's name.
Amen.