Thulinur, we are with you in prayer and will echo much of what you said to emphasize and respond to them. Thank you for recognizing God's daily blessings, protection, and provision.
As you seek God's help in your business and relationship, and acknowledge his power to swiftly change situations, remember what his Word teaches. Let's first mention finite verses about prayer and the were involved in its effectiveness. There are three principles in the Bible for effective prayers and it is worth stating abd discuss them such as praying in faith, forgiveness, and according to his will.
The first is a personal relationship with Jesus Christ. It is only through the name of Jesus Christ as a Christian, you can pray and ask God for intervention. He said "I am the way, the truth, and the life. No man cometh to the Father, but only through me." Consider a verse. The Bible says "And whatever you will ask in my name, that will I do, that the Father may be glorified in the Son. If you will ask anything in my name, I will do it." in John 14.
Because he gave his life for you in atonement of your sin you will need to accept that by faith. In your mentioned prayer it is important to emphasize it was through Grace, not just that your sins and ones you may still be committing were overlooked. When you accept Jesus Christ as the son of God the Father and accept his death, burial and resurection as atonement for your sins, Jesus intervenes on your behalf using his blood as atonement for your sin and present you to God the Father as without sin. This gives your prayer significantly more weight.
God will not listen to the prayers of a sinner, someone who does not accept his son Jesus Christ as savior. The Bible says "Jesus answered, I tell you, if these were silent, the stones would cry out." in Luke 19:40 WEB. Jesus pays attention to the prayers of the faithful who believe in him. It is why he gave his life as atonement. That is also important for the second principle. It is neccessary to forgive others. Only the righteousness of Jesus Christ can forgive you but only is you have that forgiveness for others.
Considering these principles and "not with all the sins I have but with the grace of God" will help give your prayer more weight. You are asking God about your requests for help with your business and relationship. Being successful in these may hurt others or not align with Gods will.
There are often struggles in life that are opportunities for growth and drawing nearer to God. We are reminded to "Count it all joy, my brothers, when you fall into various temptations, knowing that the testing of your faith produces endurance. Let endurance have its perfect work, that you may be perfect and complete, lacking in nothing." James 1:2-4 WEB.
God's grace is powerful, Thulinur. Regarding salvation "For by grace you have been saved through faith, and that not of yourselves; it is the gift of God, not of works, that no one would boast." Ephesians 2:8-9 WEB on a similar note. And to remember 1Corinthians 15:10 WEB "But by the grace of God I am what I am. His grace which was bestowed on me was not futile, but I worked more than all of them; yet not I, but the grace of God which was with me."
Remember that Jesus said "For where two or three are gathered together in my name, there I am in the middle of them." And his response is speaking of prayer and describes how he will intervene for you with God. "Again I tell you, that if two of you will agree on earth concerning any thing that they will ask, it will be done for them by my Father who is in heaven. For where two or three are gathered together in my name, there I am in the middle of them." Matthew 18:20.
Also regarding your relationship, remember that God's desire is for us to be holy, as He is holy. You did not provide any direct details about how the relationship is being tested. Often, testing in relationships center around the kinds of issues mentioned in the instructions. Not only is sin not God's will but it will destroy the relationship. Regarding this "Marriage is to be held in honor among all, and let the marriage bed be undefiled; for God will judge the sexually immoral and adulterers." in Hebrews 13:4 WEB.
Some Bible verses explicitly address fornication and other issues in relationships. Here is a relevant example for your situation. "Finally, brothers, we command and exhort you in the Lord Jesus, that as you received from us how you ought to walk and to please God, so you abound more and more. For you know what instructions we gave you through the Lord Jesus. For this is the will of God: your sanctification, that you abstain from sexual immorality, that each one of you know how to possess himself of his own body in sanctification and honor, not in the passion of lust, even as the Gentiles who do not know God;" 1Thessalonians 4:1-5.
What is the goal of your relationship. Is it Marriage? Is it to be married to another Christian? the spirit of your relationship should be for marriage and marriage to another christian. Parents should be involved. There are 14 references concerning involved parents in courtship in the Song of Solomon. And to finish mentioning that Financially God will bless you with all good things if you trust him. Often God's blessings may not be riches in this life as he may prefer to bless you directly by other means and still have all your needs met despite anything less than a satisfactory result. He will fit you and your spouse to help others and do his work. Consider Matthew 6 by studying it concerning how he gives you all things you need.
Consider this closing prayer from us:"
Father, we come before you in prayer next to Thulinur. We pray for the strength to persevere in your way and do what is right not just looking for your help in this life. Please forgive our sins and help us to forgive others as we do not hold anything against them and that the forgiveness Jesus gives us is true in our lives. Bring fellowship and encouragement from other believers joining together in your name as well. As particular needs come up in the day we pray for guidance from You, as well as wisdom to do Your will. Father, we love You and Christ Jesus is Lord of our lives. Amen