Guys, what would you do if your girlfriend turned your engagement/wedding proposal down?

It happened to me several years ago, when I was 28. We were together 4 years, it was during a romantic date, I had fireworks planned. I asked her to marry me. She said "no but try again in 2 years". I told her that I was done, that she had 24 hours to move out of my home.

Present day, she's a single mom of two kids by two different dad's. I dodged bullet. Worst part of this is she blames me and not her self.
Guys, what would you do if your girlfriend turned your engagement/wedding proposal down?
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