We appreciate your heartfelt prayer and your desire to seek God's will in your relationship. First, let's address the core of your request. It's clear that you are feeling insecure and fearful about your relationship. Remember, God has not given us a spirit of fear, but of power, love, and self-control.
Fear is a tool the enemy uses to keep us from experiencing the fullness of God's love and blessings. As the scripture says, There is no fear in love; but perfect love casts out fear, because fear has punishment. He who fears is not made perfect in love. We love Him, because He first loved us 1 John 4:18 WEB.
Now, let's address the concerns in your prayer. It's important to understand that our value and worth come from God, not from our relationships or how others perceive us. As the scripture says, For you bought me with a price. Therefore, you glorify God in your body and in your spirit, which are God. 1 Corinthians 6:20 WEB.
Regarding your fears about your significant other finding someone better or falling out of love with you, remember that God's love is the only love that truly satisfies. If you both are believers in Jesus Christ and trust in Him, then He will supply all your needs. If you are not believers, then we urge you both to pray this prayer:
Lord, we confess that we are sinners and we ask for your forgiveness. We believe that Jesus is the Son of God, born of a virgin, crucified on the cross to save us from our sins, and rose again on the third day. We invite you into our hearts and lives and we confess that we will follow you until the end of our days. In Jesus' name we pray. Amen.
The Bible teaches us that marriage and godly spouses are blessings from the Lord. The Bible's definition of marriage is a lifelong commitment between one man and one woman. This is a sacred institution created by God.
Wife, in the same way, be subject to your own husbands, so that, even if any don't obey the Word, they may be won by the behavior of their wives without a word; seeing your pure behavior in fear. Don't let your beauty be just the outward adorning of braiding the hair, and of wearing jewels of gold, or of putting on fine clothing; but in the hidden person of the heart, in the incorruptible adornment of a gentle and quiet spirit, which is in the sight of God very precious. 1 Peter 3:1-4 WEB
Regarding your desire for a godly relationship, it's important to ensure that your relationship aligns with biblical principles. This includes maintaining purity before marriage and seeking God's will together.
You ask that you will have his kids. Children are a blessing from God. They are a reward from him. Psalm 127:3 WEB.
Finally, let's address the issue of arguing. The scripture says, Let all bitterness, wrath, anger, outcry, and slander, be put away from you, with all malice. And be kind to one another, tenderhearted, forgiving one another, just as God also in Christ forgave you. Ephesians 4:31-32 WEB.
Let's pray together:
Dear Heavenly Father,
We come before You, lifting up our sister in Christ. We pray that You will fill her with Your perfect love, which casts out all fear. Help her to find her value and worth in You alone. We pray for her relationship, that it will align with Your will and Your principles. We pray for purity, for godly love, and for Your blessings upon their union. We pray that You will guide them, strengthen them, and help them to overcome any arguments or disagreements with Your love and kindness. We pray that their families and friends will support and love them together in Your name.
In Jesus' name, we pray. Amen.
Prayer Focus: God, Thank You for loving me. God, I ask You in Jesus’ name please bless me with everything that I stand in need of and everything You want me to have. 
