May Almighty Allah make you pious, righteous, modest and virtuous Muslim and grant your efforts for the same! May Almighty Allah bestow you best return for the hard work and you endeavour to bear against your nafs in this world and in hereafter! May He give you taufiq to follow Islamic teachings learnt from from authentic Ulama or by reading authentic books! May Allah give you courage and sprit for doing each action for the pleasure of Allah!
Islam prohibits an adult girl to talk to any strange adult boy without any need. It is also not lawful to go unveiled in front of him and meeting in privacy has also been termed as haram. Who could be more pious than the Sahabiyat (رضى الله عنهن) and the holy wives (رضى الله عنهن), likewise who can claim to be more modest and virtuous than the companions of the holy Prophet (صلى الله عليه وسلم) but Almighty Allah and the holy Prophet Muhammad (صلى الله عليه وسلم) ordered them the same which we mentioned above. The holy Prophet Muhammad (صلى الله عليه وسلم) said to Hadhrat Ali (رضى الله عنه): The first eye that falls all of a sudden on any non-mahram is allowable, but to keep on gazing or cast look at a second time is unacceptable. Hadhrat Abdullah ibn Umm Maktoom (رضى الله عنه) who was blind once came to meet the holy Prophet Muhammad (صلى الله عليه وسلم). The holy Prophet Muhammad (صلى الله عليه وسلم) asked his wives (رضى الله عنهن) to go behind curtain. The holy wives asked the holy Prophet (صلى الله عليه وسلم) he is a blind man (he cannot see us). The holy Prophet (صلى الله عليه وسلم) said: but both of you (holy wives) are not blind.
In the light of these instructions you should try to follow the Shariah and fear Allah. Almighty Allah shall give you courage and help you. Just do not go unveiled in front of that non-Muslim boy (or any other man) and do not talk unnecessarily. If there is some important talk then you may talk behind purdah. It is mentioned in hadith that Satan runs in the vein of man like blood and can misguide him and insist him on any wrong thing. If there is no fear of love talks then too it is necessary to follow Shariah rulings. Here lies the safety of a woman’s chastity, virtue and the safety of her religion and iman.
You should offer salah regularly and keep on doing taubah and istighfar. Also supplicate Almighty Allah that He bestows you uprightness. Amen!
Allah (Subhana Wa Ta’ala) knows Best
Darul Uloom Deoband