(Related Article: When Your Ex Girlfriend Texts You After 6 Months) I did not answer her calls, and soon after that, she sent me a text with a screenshot of a math problem she wanted me to help her solve. The weird thing is I know she KNOWS how to solve that kind of problem. Why would she ask me?. Here are a few reasons why your ex continues to send you text messages. Try to be prudent and careful when responding to your ex's texts if that is something you want to do. They miss you: Seeing as the two of you spent so much time together, it is perfectly natural for your ex to miss spending time with you. By texting you, they keep that line.