Favourite answer

Personally no, I don't feel that you should walk away from him. Here's why. I'm sure that he didn't come right out and tell you "hey, I lost my virginity to my sister." That's not something that people willingly just "tell" someone they are just getting with. However, if he finally does come to you with something such as this, it's not something that happened while yall were together, it's not something that should destroy your relationship now. There are things that people do in their past that create them into who they are today. Why, why would you hold his past against him if it's not part of his current life now? Leaving him would be telling him "I am ashamed of your past and of you for your past." Ask yourself this question. If someone is raped by their parent, get pregnant, and they state "I don't know who the father is" should that be held against them when the truth comes out to the one person they love enough to confide in about it? Absolutely not! It's something that happened in the past and it's something that they have to live with already. If he loved you enough to be honest with you, you should love him enough to stand behind him through dealing with it and telling you about it!