I have this interesting gift. Whenever someone with whom I've had an intense or prolonged connection with loses interest and truly moves on, I have a dream about it. Nothing may happen in real life for a short while, but it always shows up sooner rather than later. Even when I really, really don't want that person to stop caring about me (and there have been a few instances of that.), I wake up from that dream upset, and hoping against hope that I'm wrong.
I've never been wrong.
Conversely, even when someone tells me they're done, cuts me off and refuses to talk to me (like my first boyfriend after someone told him a lie about me and he didn't bother to ask me about it) and every outside indicator is that they really don't care, if I don't have that dream, I know they're not telling themselves or me or both, the truth of how they feel. I'm still friends with those people.
I've never been wrong about that either. Thank goodness. Though sometimes the rift is repaired after I've moved on and I can't offer the same relationship I wanted to before. I also find that when someone I care about is thinking a lot about me, I can tell. Sometimes I can tell if it's angry, longing, happy, etc. But not all the time.
I don't give my attention to people who don't think about me. I know if I'm thinking about them, they're thinking about me. And until I have that dream, even when someone swears up and down they want nothing to do with me. I just don't believe them. That's how accurate that dream has been.
It's an interesting gift. Not much to do with it other than gather information, because for purposes of living my life, if someone tells me they're not interested, I act as if they aren't, even when I know they're not telling me the truth. Sometimes, they're telling me what they would like to be the truth, so I interact with them with that supposition. But I always leave the door a little bit open. Just in case they come to their senses.