Answer:
(Fatwa: 1454/1149=H/1430)
The Nikah did not take place by this conversation as per the Shariah. It is necessary that the meeting of offering of marriage and its acceptance are same, which is missing here. There are some other matters which are objectionable. Such a secret Nikah is against the will of Shariah. You are advised to marry openly with the mediation of your guardians.
Allah (Subhana Wa Ta’ala) knows Best
Darul Ifta,
Darul Uloom Deoband
