Deciding whether to break up with someone is a deeply personal choice and depends on many factors in your relationship. It's important to consider your feelings, values, and the overall context of the situation. While I can't make the decision for you, I can offer some guidance on how to approach this issue:
Communication: Talk to your girlfriend about your feelings and concerns. Express how her talking to her ex makes you feel and why it's a breach of trust for you, especially after she promised not to do it again. Honest and open communication is crucial in any relationship.
Boundaries: Discuss boundaries that are important to both of you regarding interactions with ex-partners. Different people have different comfort levels, and it's essential to find common ground on this matter.
Intentions: Try to understand the intentions behind her actions. Is she talking to her ex simply as a friend, or is there something more to it? Understanding her perspective can provide you with clarity.
Past behavior: Evaluate the history of your relationship. Has this kind of behavior happened before, or is it an isolated incident? Patterns of behavior can be telling in assessing the health of a relationship.
Trust: Trust is a foundation of any relationship. If her actions have seriously damaged your trust, consider whether you can rebuild it or if it's irreparably broken.
Definition of cheating: Different people have different definitions of cheating. Some may consider any communication with an ex to be cheating, while others may view it differently. Reflect on what you consider crossing a boundary in your relationship.
Ultimately, it's up to you to decide if this situation is something you can move past and work through together or if it's a deal-breaker for you. If you find it difficult to resolve the issue through communication or if it's causing ongoing pain and mistrust, it might be worth considering whether the relationship is healthy and fulfilling for you in the long run.
Remember that seeking advice from close friends or family members who know you and the dynamics of your relationship might also provide valuable insights. Whatever you decide, prioritize your well-being and emotional health.