Is what I am doing now an act of disobedience to God and a cause of His wrath, and what is the method of repentance and dealing with this situation?

You must sever your relationship with this young man immediately, as your communication with him is an act of disobedience to Allah. You have sinned and wronged yourself by transgressing Allah's boundaries. Therefore, you must make sincere repentance by abandoning the sin, feeling remorse, and resolving never to return to it. What this young man did indicates his weak faith, corrupt character, and audacity in committing forbidden acts. You must remove your attachment to him, occupy your time with beneficial deeds, strengthen your connection with Allah, and keep company with righteous women, while frequently supplicating to Allah to grant you a righteous husband and protect you from trials. "Friendship" between young men and women is not sanctioned by Islamic law; it is a gateway to great evil and corruption.