There can be various reasons why an ex might start talking about their current relationship. Some of the common reasons include:
Seeking validation: They might want to show that they have moved on and found happiness to seek validation or approval from others, including you.
Jealousy or competitiveness: By talking about their current relationship, they may be trying to elicit a reaction from you, to make you jealous or provoke a sense of competition.
Emotional processing: It's possible that discussing their current relationship helps them process their feelings, especially if the breakup was recent or emotionally significant.
Trying to gauge your reaction: Your ex might be curious about how you feel about their new relationship and may use this as a way to assess your emotions towards them.
Attempting to remain friends: Some people believe that being open about their current relationship will help maintain a friendship with their ex, even if it was a romantic relationship before.
Demonstrating contentment: They could be trying to convey that they are content and happy in their new relationship as a way of putting the past behind them.
Unresolved feelings: In some cases, talking about their current relationship might be a way of indirectly communicating that they still have feelings for you or want you to notice them.
Genuine interest in sharing: Sometimes, people talk about their current relationships without any ulterior motives; they might merely want to share aspects of their life with you as they would with any friend.
It's essential to be mindful of how these conversations make you feel. If it brings discomfort or pain, it might be helpful to set boundaries and communicate your feelings honestly. Additionally, consider whether maintaining contact with your ex is beneficial for your own healing and well-being. Sometimes, it's necessary to create space to move on and find closure after a breakup.