First, put all of your ex-boyfriend's things in a box or suitcase and get them back to him immediately. Ideally, a friend can deliver the items to him so that you don't have to see him. This will keep you from touching his belongings, or trying to smell his scent. Then, get rid of anything that reminds you of the memories you share -- from photographs, CDs he burned for you, gifts he gave you, or mementos from any trips you took together.  It may hurt knowing that those were the only things you had left of him, but you should also know that it's the right thing to do. You will feel a sense of accomplishment after you do this and it will be you first step towards healing. If you really would like to treasure the memories of your relationship and to return to them one day, put them in a box and place it out of your sight -- you can put it in storage or leave it at a friend's house. Just avoid the temptation to open it at all costs. Though you may think that talking to your ex will make you feel better because you miss him so much, it will only make you feel a million times worse. Every time you hear his voice, you'll feel sadness, regret, bitterness, and a slew of other negative emotions that will send you spiraling downward. Unless you have to talk to him for logistical reasons, like figuring out what to do with your shared car or apartment, you should stop talking to him and seeing him completely.  Don't think that the mature thing to do is to meet up with your ex for coffee every week or two. This will only cause you more pain. If he really insists that you should try to "be friends," tell him that this is not an option for you. You can do the "just friends" thing when and if you're ready, but this can take months, or even years.  Stop texting or calling your ex. Even if you thought of something that really reminded you of him, hold off. Though you may want to make him think you could care less if he's around, avoid any social gatherings or places where he might be for a while. It may be less convenient to...

How would you rephrase that briefly using Vietnamese?
Loại bỏ những thứ khiến bạn nhớ đến người ấy. Ngừng liên lạc với bạn trai cũ. Tránh xa mạng xã hội. Hạn chế hỏi về người ấy. Tránh làm những việc khiến bạn nhớ đến người ấy – trong một thời gian. Chuyển đổi môi trường sống.