PBA’s story, with a slight variation and without the ending, actually happened. (But not to him…yet.)
A guy was seriously dating two girls and decided on girl A. Problem was, when he proposed, she turned him down. So the next night, he got engaged to girl B.
My great aunt (grandfather’s sister) was seeing two guys. Guy A told my grandfather that he was about to propose. My grandfather liked guy B better, so he told him to hurry and propose before the other guy does (which he did).