I can offer some general possibilities for why someone might say they are happy without their ex-partner:
Moving On: Your ex may genuinely have moved on from the relationship and found happiness in other aspects of their life.
Self-Preservation: Sometimes people say they are happy without their ex as a way to protect themselves from appearing vulnerable or hurt.
Coping Mechanism: Expressing happiness can be a way for some individuals to cope with the pain of a breakup, even if they are not entirely happy.
Independence: Some people may feel a sense of freedom and independence after a breakup, which they interpret as happiness.
Validation: By stating they are happy without you, your ex might be seeking validation or trying to elicit a reaction from you.
Defense Mechanism: Your ex might be using this statement as a defense mechanism to hide their true feelings of sadness or loneliness.
Communication Style: People have different ways of expressing emotions, and saying they are happy could be their way of communicating that they are doing okay overall.
Moving Forward: Your ex could be focusing on the future and the positive aspects of their life as they move forward without the relationship.
Resentment or Anger: If the breakup was difficult or contentious, your ex might be expressing happiness to convey that they have moved on and are no longer affected by the past.
It's important to remember that everyone's emotional journey after a breakup is unique, and people cope with their feelings differently. If you find that their statement is affecting you emotionally, it may be helpful to focus on your own well-being, personal growth, and healing during this time. If you're struggling to move on, consider seeking support from friends, family, or a professional counselor who can help you navigate the post-breakup process.