Wife just told me doesn't want to be married

[witz10]

My W changed her profile pic on facebook today. She looks really nice. Also liked something my cousin posted on facebook "Your journey has molded you for your greater good and it was exactly what it needed to be. Don't think that you've lost time. It took each and every situation you have encountered to bring you to now. And now is right on time." Then it also has another line "Everything happens for a reason in life. Even when things seem to be falling apart around you, it could just be the very foundation for you to start from and build yourself up...

Now I am taking this with everything that is going on right now and NOT having a good feeling for my marriage. I think it is dying slowly and there is no way back now. Which [censored] cause I love her and she won't ever find anyone else that will treat her like I would. Many people that know us have said this to me.
I am not sure what to do anymore at all to fix anything