It was not recommended to write on the cigarette as a gift for her boyfriend. Smoking is harmful to health, not only to oneself but also to the people around you. As a boyfriend, he should care and respect his girlfriend and support her healthy choices. If she wanted to make a special gift for her boyfriend, she could consider other more meaningful ways. For example, you can make a photo album for him to record the beautiful moments you two were together or write a love letter to express his love and gratitude to you. These gifts would be more thoughtful, practical, and meaningful.