We understand that you're going through a difficult time, and we're here to pray and provide guidance based on biblical principles.
Firstly, it's important to remember that God cares about our emotions and thoughts. The Bible tells us, "Don't be anxious about anything, but in every situation, by prayer and petition, with thanksgiving, present your requests to God" (Philippians 4:6 WEB). So, let's bring your feelings and concerns to God in prayer.
Lord, we lift up our brother who is feeling troubled and uncertain. We pray that You will comfort his heart and guide his thoughts. Help him to trust in You with all his heart and lean not on his own understanding (Proverbs 3:5 WEB). In Jesus' name, we pray.
Regarding the situation with the girl you're interested in, it's important to remember that relationships should be built on godly principles. The Bible encourages us to be equally yoked with believers (2 Corinthians 6:14 WEB). If the other person is not a godly man, then it's right to be concerned. However, it's also important not to judge others, as only God knows their heart. The Bible tells us to assume the best in others.
God has a plan for the girl you are interested in as well as for you, and His ways are higher than ours (Isaiah 55:8-9 WEB). It's crucial to trust in Him and wait on His timing. God will provide a godly spouse to those who trust and obey Him, and follow His Words.
There may not be any issue with becoming anxious over this situation, but rather consider it a good thing that the other person may be interested in someone else. If anything, this is a great opportunity to examine your own heart and ask yourself if you are ready to be the godly spouse that you are looking for and pursue the other person with a godly courtship.
We also want to encourage you to continue praying in Jesus' name. It's only through Jesus that we have access to God, "For there is one God, and one mediator between God and men, the man Christ Jesus" (1 Timothy 2:5 WEB). If you haven't already, consider accepting Jesus as your Lord and Savior. The Bible tells us, "Because, if you confess with your mouth that Jesus is Lord and believe in your heart that God raised him from the dead, you will be saved" (Romans 10:9 WEB).
Lastly, remember that God loves you and has a plan for your life. Trust in Him, and He will guide your path (Proverbs 3:5-6 WEB).