If she truly believes in no sex before marriage, and you don't, then she isn't perfect for you. Either you force her to break something she's lived by her whole life or she forces you into a blind and ill advised marriage - sounds wonderful.
What stage are you at with her?
Is it staring longingly across the workplace dreaming of what could be if only it weren't for that rumour about her and marraige...
Or
You've been close friends for ages, have talked to her about taking things further and both confessed your love for each other, but are haunted by the white elephant of her virginity.
I don't mean either of those to sound rude but knowing how serious things are would give a better basis for serious advice.
What stage are you at with her?
Is it staring longingly across the workplace dreaming of what could be if only it weren't for that rumour about her and marraige...
Or
You've been close friends for ages, have talked to her about taking things further and both confessed your love for each other, but are haunted by the white elephant of her virginity.
I don't mean either of those to sound rude but knowing how serious things are would give a better basis for serious advice.