The problem with Lacan, Zizek and romanticism as a whole is that they believe one can demand the impossible from a PERSON as from a cause, which is never true. Human relationship is about voluntary consensus and mutuality. Never run after anyone who doesn't give you a thought.
Yes,He's just not that into you!Picking up the pieces and starting over. Freeing yourself up for something better in the future. Maybe the happy ending is just moving on.