I swear some of you guys have some special equipment preinstalled in your brains. It's dark, but maaaan, so useful. I'm totally in awe. With that only I have no idea why would she chose him over you. Precognition is a huge evolutionary advantage.
And you are not alone.
Years back, my hubby had some weird dream with one of his closest friends being into me out of a blue. He woke up screaming and punching, he told me everything that happened in that dream, and I was wtf.
But he was so disturbed that I went straight to the guy's home and talked to his mother. It turned out to be true.
You can imagine a conversation when a guy got out of his bedroom, it was like 7-8 in a morning, winter time, still dark: 'Hello there sunshine, I came to discuss some things that you plot in your mind. Your momma and me just had such a sweet conversation about you... ' Dude needed a new diaper.
I really wish you the best and much success in love.