Puppy love, unhealthy infatuation, obsession of another, a love interest comes from ptsd. It's an imaginary world the a dissolutiioned person created regards the communications, meanings, interactions about another person, in order to "keep" them. Limerence gives the mood power to another by basing total happiness, wholeness , inner peace dependent on another person's attention or the lack of it. Learn about this new to me word, limerence