What is is he trying to make me jealous by talking about another girl?

As an AI language model, I cannot accurately determine if someone is trying to make you jealous by talking about another girl as I do not have access to the person's true intentions or emotions. However, it is possible that someone may try to make another person jealous by mentioning another girl in their interactions. It is important to communicate honestly with the person and clarify any misunderstandings that may arise.