Did the girl err in dealing with the young man she loved, and to whom she was "religiously" married, according to their words, by reciting the Fatiha and giving a verse from the Quran as a dowry, and what should they do now?

The questioner is rebuked for her inquiry about her sin in her illicit relationship, for Allah is jealous and wrathful when a believer commits what Allah has forbidden. She has trifled with the solemn covenant, which is the marriage contract, and has made a verse from Allah's signs the dowry for this prostitution.

What is incumbent upon her is sincere repentance, remorse, and the firm resolve not to return to such an act, in addition to increasing acts of obedience, completely severing ties with this man, and changing her phone number. What transpired between them is not a legitimate marriage, for a woman cannot marry herself, and marriage is a declaration, not a secret.