Limerence Involves Intrusive Thoughts

Limerence is a state of infatuation or obsession with another person that involves an all-consuming passion and intrusive thoughts.

It is often a result of not being present either through trauma or certain childhood development issues. Alternatively, you may experience it when you are run down, if you haven’t had enough sleep for example, and are lacking serotonin. So, you fantasize that someone else could save you and crystallize those thoughts into a golden image of 'the one.'