First, read the English article below.

Trying to let your ex down easy can backfire. Don’t be tempted to go back to someone because you feel sorry for him or her, or because you don’t want to hurt him/her. If you want to break up with someone, it’s best for both of you to just do it and move on. If you are dealing with an ex that will not leave you alone, you need to be extra clear that the relationship really is over. Be kind, but firm. Otherwise the ex might assume that the relationship is still ongoing, or might imagine that you will get back together at some point.  Try making unambiguous statements such as: “[Insert person’s name], our relationship ended a month ago. I need to move on with my life.” Avoid statements like “I need to focus on myself right now,” or “I don’t have time for a relationship right now,” because these can suggest that the relationship could begin again some time in the future. If you have already tried to break up with your ex and he or she did not get it, try again, making sure to be absolutely clear. Try saying something like: “When we talked last time, I wanted it to be clear that we are no longer in a relationship, but I don’t think you understood me. We are not in a relationship. Do you understand now?” Tell your family and friends (especially any friends that you and your ex have in common) that you have broken up. The more public the information is, the more “real” it will appear to your ex. It you broke up quietly and without telling others, your ex might interpret it as a sign that you are still interested, and become obsessed with getting you back. 

Now, please write a short abstract for it in Vietnamese. Abstract:
Đừng để chuyện chia tay kéo dài. Hãy thể hiện rõ ràng rằng mối quan hệ đã kết thúc. Hãy để những người khác biết chuyện hai bạn chia tay.