There could be several reasons why your ex chose to tell you that she's talking to someone else:
Honesty: Your ex may value honesty and transparency in her communication with you. By sharing this information, she might want to be upfront about her current dating situation.
Closure: Sometimes, people reveal such information as a way to gain closure or to ensure that both parties are aware that the romantic relationship is truly over.
Jealousy: It's possible that your ex wants to elicit a reaction from you or make you feel jealous. By mentioning someone else, she might be testing your emotions or trying to see how you react.
Move On: Sharing the fact that she's talking to someone else might be her way of signaling that she's moving on and trying to explore new connections or relationships.
Emotional Distance: Your ex may be attempting to create emotional distance between you and her, establishing boundaries and setting the tone for a post-breakup friendship or limited contact.
Stay Friends: If she hopes to maintain a friendship with you, she might want to be open about her dating life, as friends often discuss these aspects with each other.
Miscommunication: It's also possible that there was some misunderstanding, and she casually mentioned her dating life without considering how it might affect you.
Whatever her reasons may be, it's essential to approach this information with a level head and consider your own feelings and emotional well-being. If you're still healing from the breakup and find the news upsetting, it's okay to take some distance from communication with your ex until you feel more comfortable.
Remember, after a breakup, both parties have the freedom to explore new relationships and connections. If you're not interested in getting back together and have accepted the end of the romantic relationship, it's crucial to focus on your own life, personal growth, and happiness. Take the time to heal, and when you're ready, consider pursuing new opportunities for yourself as well.