Wondering what I did to deserve this

My life was amazing! I had the most amazing man, a pretty amazing relationship, a house together, our fur babies, engaged and planning a wedding as well as children and I was working my way to my dream job. And now it's all gone to shit. My amazing man now suffers depression, our relationship is falling apart, dreams and plans of kids and a wedding are all out the window. Everything's falling apart. Just wondering what I did to deserve having my life turned upside down and have everything go to shit! Just wish things never changed!