Middle school students “puppy love” has become a hot topic in schools. This case introduces a middle school boy’s youth trouble, and the resulting depression, anxiety and tension, through two teachers' active communication and cooperation and timely intervention, ultimately help students get rid of the “puppy love” crisis, regain confidence. This case emphasizes the importance of cross-field teachers’ cooperation, aiming at making educators pay attention to the characteristics of middle school students’ love psychology, thus designing this course with the characteristics of education and psychological education, namely, the course for class teachers and psychological teachers. Let cross-field teachers set up a reasonable view of love for middle school students, and realize the self-development of middle school students to contribute their own strength.