All perfect praise be to Allaah, The Lord of the Worlds. I testify that there is none worthy of worship except Allaah, and that Muhammad is His slave and Messenger.
It is not a condition to inform the fiancé whether the girl is virgin or deflowred unless he enquires about it. If he enquires about this, it is an obligation to inform him because if her guardian or herself conceals this, then this is considered as a form of cheating and the Prophet said: "Whoever cheats us is not one of us." [Muslim]
Hence, if a man conditions that the woman be virgin and he finds out that she is deflowred, then according to the most correct opinion of the scholars he has the choice to invalidate the marriage contract and take back his dowry. This is the opinion of Imaam Maalik and also one of the opinions of Imaams Ash-Shaafi'i and Ahmad .
Finally, we advise you to fear Allaah and be patient until Allaah makes a way out for you. We supplicate Allaah to grant you a good husband and a good progeny.
Allaah Knows best.