Last night my fiancee said she will leave me if I don't 'fix myself'.

She says she is miserable with me because I am depressed and don't do much with her because of the depression, along with debilitating health issues I have. I have been depressed for a long time, she told me she thought she could change me and that's the only reason she got with me. She also said in the beginning she was only interested in me for sex. The only reason she got into a relationship with me was because she had nowhere else to stay, but she claims she fell in love with me a little while after moving in with me. At this point.. I'm not sure I believe that.

Basically, last night she started telling me all these things, and she didn't want to be with me anymore. She made me beg her to stay, I had to beg her and promise I would try to fight my depression harder and somehow fight my illness that will likely kill me anyway. She was so cold, it was like something took over her, but this isn't the first time I've seen her like this. It's just happening more often now.

I also have 2 young kids so I'm always exhausted, and she gets mad that I don't go hang out and party with her and her friends. I feel disposable and lost because I honestly thought she loved me, but now I'm highly doubting that.