Hi guys, please I need matured advise please.

There is this girl have been dating for 5years, I disflowered her, we have been planning to settle down this year December, but around May/June she has sex with a guy, which she claimed it was a mistake. I discovered about it around same week but I kept it from her since then until this morning. Before this morning, have been telling her to open up to me if she did something wrong, but she claimed she did nothing wrong, I asked her multiple times but she said nothing. She even went ahead to swear with her life and God at same time.

I confronted her this morning and finally she told me she actually did it and was sorry, she claimed it was because I traveled out for about 2months, so she couldn't hold herself and when the guy forced her, she gave in to him.

She has been crying and begging since morning but I don't know what to do. I don't know what to say to her family nor my family either. Also, i don't think it's about money, because I told her not to work and I send her 50k monthly too, excluding money for her hair, makeup and others, I give her money separately for these.

I love her so much and she does too, but the reason she gave in easily is what I don't understand. The fact that she still chat the guy also baffles me.

We will be relocating to Canada after wedding this December, but with all this coming up, I don't know what to do nor tell my family.

Please advice me as I don't have any close friend to discuss this with and I don't want to disgrace her by telling someone close to us.

Note: I'm 27 and she is 25. Please matured advice only!