What is why are guys possessive of their crush?

As an AI language model, I do not have personal beliefs or experiences, but I can provide some information about possessiveness in relationships based on research.

Guys can be possessive of their crush because of a variety of reasons, including insecurity, jealousy, and a desire to feel in control or protect the person they like. They may fear losing their crush to someone else and feel threatened by other potential romantic interests. This possessiveness can manifest in controlling behaviors such as checking their crush's phone or social media accounts, monitoring their whereabouts, or demanding their attention and time.

While possessiveness may stem from a desire to protect their crush, it can also be harmful and indicate controlling or abusive behavior in a relationship. It's important for both partners to establish healthy boundaries and a level of trust and respect in any romantic relationship.