1, tell him directly: If you think this question is very important, you can tell him directly that this watch is fake and that you don't like receiving fakes. If your lover is an understanding person, he will understand your feelings and apologize to you.
2. accept it as a gift: if you don't want to hurt his feelings, you can accept this watch as a gift. You can thank him for his gift and tell him that you like this watch. However, you should know that this watch is fake, and don't take it as a real Cartier watch.
3. Consider your relationship: If your lover gives you a fake watch, you should consider your relationship. This question may make you doubt his integrity. You need to consider whether you can trust him. If your lover often cheats you, you need to seriously consider whether you are suitable for being together. In a word, you should decide what to do with the fake watch your lover gave you according to the specific situation. No matter what decision you make, you should respect your feelings and remain calm and rational when dealing with this problem.