What is what does a white heart mean from a girl?

As an AI language model, I do not have personal beliefs, emotions and perceptions, but here is some information on what a white heart emoji may convey.

A white heart emoji is often used by girls to show purity, innocence, and trust. It can also symbolize a strong and pure love that is unadulterated by any malice or negativity. Furthermore, it can represent forgiveness, peace, and gentleness. However, it's important to note that the interpretation of an emoji largely depends on its context and the personal beliefs and perceptions of the one using it.