I was in a relationship with a Non-Muslim girl . We loved each other from the heart. At once we had sexual feeling towards each other and she allowed me for that. We did had sex. She allowed me only because she trusted me that much that I won't cheat her and I don't want to. I'm the only man who touched her body. Now we both can't marry other person as we had sex each other. Our mind doesn't allow for that. I know Islam doesn't allow marring a Non-Muslim girl. But for this reason I can't leave her alone. So as an atonement I'm ready to marry her.

Will Allah forgive us for having sex and also for marrying a her?

Hey bro, if she is really fond with u,just try to revert her for islam.. every thing will be okay..

I don't think you love her. You care more for your sin and forgiveness. First of all you don't have to marry someone because you have sex with them. You should only marry her or anybody else if you love and trust the person. I think if the girl from other religion she wouldn't have any problem to move on with reality. I suggest you to seek apology to your conscience and allah. Leave the girl, tell her truth. It was your mistake that you committed a thing knowing all the rules and customs according to your religion. So don't worry, accept the mistake and move on.