Wants to marry a non-Muslim coworker with whom he committed Zina
2-2-2012 | IslamWeb
Question:
Hello first I want to thank you for all the good your doing I’m an older man. And I work at a place the doesn’t awlow you to marry a coworker I met a female Christian and stared teaching her about Islam she was abused a lot as a child and is very insecure in her self she is eager to learn about Islam and believes every thing she reads we did a very bad thing and hade an affair we cut it off but still work together I no longer see her out side of work and only see her in the break room with other people around and I have repented for my big sin, may ALLAH forgive me. What I need to know is can I marry her as I fear committing this sin again. And just not say any thing to my work till I can find a new job or get transferred to a new place I know if I keep teaching her and marry her she will convert inshalla but if I don’t marry her she will turn complete back to Christian as she has told me that a Muslim girl cant marry a nonmuslim male so she cant convert and be alone she is not strong enofe for that. She is the kind of girl who want to betaken care of and procted she need to fell safe she doesn’t wear make up or dress to get attrition she wears lose fitting American stile clothing she doesn’t wear any thing other than ear rings and even those are small she doesn’t date man and spends most of her time home tacking car of her family she is caring and worries about me when she doesn’t get to see me when together she would worry about what I was eating and cook for me. I did think of getting a new job and never seeing her again but I would miss her a lot and fear she would stop learning with out my help she has read an English translation of the Quran on line and says she believes it
Answer:
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.
Indeed, Islam has placed a strong barrier between a man and a woman who is non-Mahram (marriageable) to him, as it forbids establishing any affectionate relationship between them because this leads to many bad consequences. What happened to you with this woman is the best example of this.
Nonetheless, you did well by repenting to Allaah The Almighty. Now you are obliged to break off any relationship with her if you want to be safe and secure in your religion.
For more benefit, please refer to Fataawa 81356 and 86527.
In principle, a Muslim is permitted to marry a woman from the People of the Book, whether she is a Christian or a Jew, provided that she is chaste.
However, it is not permissible for a Muslim to marry a woman who commits Zina (adultery or fornication) as we clarified in Fatwa 84159.
Moreover, the scholars 
clarified that a Muslim should not marry a woman from the People of the Book even if she is chaste as there are many disadvantages in such a marriage, as she may influence his children in their creed (belief) and conduct. Indeed, this happens a lot, and this is something for which those who have pure hearts would regret.
For more benefit on the dangers of marrying a woman from the People of the Book, please refer to Fataawa 88451 and 84807.
Therefore, it is better for you to look for a pious Muslim woman to marry, who would help you in your religious matters.
If you can find another place to work that is far from her, then do so. As regards love sickness, its treatment is easy as we clarified in Fatwa 84544.
On the other hand, you should not be misled by the qualities you mentioned about her, that she is loving and caring and that she worries about you etc. This is nothing but lures of the devil to trap you in his plots.
As regards calling her to Islam, then this is good in itself, provided that the Islamic pre-requisites are observed. Nonetheless, it is better for a woman to call her to Islam in order to avoid being tempted by her.
For more benefit on the Islamic conditions of a man calling a non-Mahram woman to Islam, please refer to Fatwa 88997.
However, if she becomes a righteous Muslim, it becomes permissible for you to marry her.
Allaah Knows best.