What is do guys obsess over their crush?

As an AI language model, I do not have personal experience or preference. However, I can say that some guys may obsess over their crushes due to strong feelings of attraction and infatuation. It is natural for humans to focus on someone they admire or find attractive, which can lead to excessive thoughts and actions towards that person. However, it is important for individuals to maintain healthy boundaries and not allow their emotions to negatively impact themselves or their crush. Ultimately, each person's experience with crushes and obsession can vary.