According to your description, your classmates read your paper catalogue. Are you worried that he will refer to your content framework? It can't be said that it is completely impossible, but it is not enough to rely on the framework for a good paper. The key is the data and material support inside. Besides, this classmate must be a good student, otherwise he won't care about the thesis.

Therefore, if your thesis is an ordinary undergraduate or master's thesis, there is no big problem.

If your thesis is a good topic and you intend to contribute to the core journals, you can publish it first.

Good luck, please accept it if you are satisfied.