Psychics not exist, any real psychic can collect millions of dollars at several challenges, no one ever collect any of them, that prove psychics not exist.
http://thespiritscience.net/2014/07/26/how-to-remove-attachments-to-past-relationships/ , Take a look at this. I think it worked for me. I've stopped dreaming about this one guy ever since. *shrugs*
as far as energy goes, it's either negative or positive in nature; if someone has good feelings for you, they can give off some "vibes" in your direction; sometimes you may even be able to feel it surrounding you.