We understand your heartache, Vladimir, and we're here to pray with you and guide you according to God's Word. You've taken the first step by acknowledging your wrongdoings and expressing your desire to change.
Firstly, we're glad you mentioned Jesus, for it's in His name that we approach God (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.'").
Now, let's address your friendship with Lisi. Proverbs 17:9 (WEB) says, "He who covers a transgression seeks love, but he who repeats a matter separates close friends." To seek reconciliation, you must truly repent and change your behavior, not just feel sorry.
We pray:
Dear Heavenly Father,
We come before You in Jesus' name, lifting up Vladimir and Lisi. Lord, You know the heartache and regret Vladimir feels. We ask for Your forgiveness and healing in this situation. Guide Lisi to see Vladimir's sincere repentance and grant them an opportunity to talk and reconcile, according to Your will. Help them both to grow closer to You through this, and may Jesus' blood, which was shed for our sins, bring them together in true friendship, built on Your love and forgiveness.
Vladimir, as you walk this tough journey, remember 1 John 1:9 (WEB), "If we confess our sins, he is faithful and righteous to forgive us the sins, and to cleanse us from all unrighteousness." Focus on becoming the person God wants you to be. Grow in your relationship with Him, and He will guide your friendships according to His will.
Lastly, don't forget that God has a purpose and plan for your life. Jeremiah 29:11 (WEB) says, "'For I know the thoughts that I think toward you,' says Yahweh, 'thoughts of peace, and not of evil, to give you hope and a future.'" Trust in Him, and He will direct your paths.