What is would a guy flirt with another girl to get my attention?

As an AI language model, I cannot assume a person's actions or thoughts. However, some guys may flirt with other girls to get the attention of someone they are interested in. This behavior could be a way to make the person feel jealous or to gauge their interest in them. But, it could also be a sign of immaturity or insecurity. It's important to communicate with the person and express how their actions make you feel.