Mikebrs that is a difficult situation. Relationships are built on trust and the fact that you both finally communicated about things is a positive. It's too bad though that you had to find out by reading her FB account and then when she was confronted with you knowing the truth, she opened up. The question is whether you will be able to trust her again. I don't know the answer to that. There is a risk either way. If you stay with her, you risk being in a situation where you will be disappointed again. (On the other hand, she may never waver again. We don't have a crystal ball.) If you leave her, you risk walking away from something that is potentially good.

I don't know the answer to your question but wish you insight and peace.