It's very very difficult to accept being wrong and accept losses. Studies show that losing $50 affects you more negatively than winning $100 would affect you positively. I'm sure we're affected the same way when it comes to our relationships. Part of growing is being able to realize when things aren't quite what you thought, as difficult as it maybe accept that.
We've all had it happen, a series of signs or events too thought-provoking or emotionally touching to be just coincidence. This phenomenon is called synchronicity. It's defined as a meaningful coincidence—an event on the outside that speaks to something on the inside—as opposed to just a random occurrence. There can only be so many coincidences before you wake up and realize that it's really not a coincidence at all.
at some point you gotta let it go