Its really sad.

But well some things are NOT in your control. If she is a LESBIAN, she should have told it to you before your marriage. And I guess she could not tell it due to family issues (I guess so).

I would like to advice you that, TALK TO HER FAMILY. TELL THERE EVERYTHING YOU DISCOVERED. I hope you managed to take some pictures of your discovery. If they don't know it, they needs some proof to believe it.

Now, coming to the part where you don't want to lose her. This phase is going to be painful for you. Stay Strong. But what I am going to tell you may hurt you a lot. See, love cannot be one sided. And everyone has their own choices.

If you really love her, then allow her to make her own choice, than just living together without any hope of future.

Instead you two can become friends if you support her in her bad time. Its surely some disgusting phase of her life now too.

Anyways, all the best. Have courage and face this :)

Thank You. I will be waiting to hear more updates from your side. :)

[Btw, what I said is completely my own personal advice, you are free to choose your own, and you may not like mine also.]

Cheers.