This totally works. Way back in middle school I had a pretty big crush on this guy. I was shy and there was just a trickle of his interest in me, posibly imaginary, but just enough to keep me miserable. One night had a pretty long dream about us going through a whole relationship with all the misunderstandings, arguments, and realizations that come with it. Woke up super refreshed, fulfilled, and ready to move on. About a year later he asked me out and I turned him down. Felt like it’d be going back to an ex or something.