My wife just wants to move on, where to..? I don't think she even knows...

Past five years my wife has not let me near her, I have slept more on the couch than in my own bed. She says we dont get on anymore but 90% of our time spent seems as normal as any other marriage, if not more so? She seems to block me out of her life altgether when it comes to her girl friends and Facebook not to mention me trying to mentor our children, seems she just won't give me a look in anymore. I'm very loving husband and father with a great job and spend all myt ime for the family. So often lately narcism rules the day? She has already filled out divorce papers, unfortunately I have to move on my best mate just disappeared...?