My fiancé of 3 years just upped and left everything we built together.

We were planning our wedding to happen in 4 months, we recently adopted two dogs and moved in together. The week before we were making plans of 5 years from now. The day before she even picked out a ton of photos to have developed for our wedding 

Just upped and abandoned it all. Left when I was grocery shopping to her parents house. 

All of our families are shocked. She just said she couldn’t do it anymore. 

It makes no sense why she would commit and make all those long term plans so recently then just leave it all without even talking to me.