The most important thing in writing a lover's letter was to express sincere feelings and longing. Here are some writing techniques that can help you write a touching love letter: 1. Use a sincere tone to express your feelings: At the beginning of the letter, express your feelings for him/her, such as love, missing, gratitude, etc. Use some sincere words and tones such as "I love you deeply","My heart is always with you", etc. 2. Details: In the letter, you can use some specific details to express your feelings of missing him or her, such as his or her name, his or her smile, his or her preferences, etc. These details could make the letter more vivid and touching. 3. Express your expectations for the future: In the letter, you can express your expectations for his/her future, such as hoping that the two of you can spend a good time together, hoping that the two of you can realize your dreams together, etc. This kind of expectation could make the letter more motivated and meaningful. 4. Express gratitude: In the letter, you can express your gratitude to him/her, such as thanking him/her for everything he/she has done for you, thanking him/her for bringing you happiness and happiness, etc. Such gratitude could make the letter more real and moving. Use some romantic words: In the letter, you can use some romantic words to express your love for him, such as "I have been waiting for this day","My heart has always been connected to you", etc. This kind of romantic language could make the letter more romantic and touching. To write a lover's letter, you need to express your true feelings and longing through some specific details and expectations for the future to express gratitude, and use some romantic words to make the letter more touching.