What is he has a girlfriend but gets jealous when i talk to other guys?

As an AI language model, I don't have access to the specific context of this situation. However, usually, a person getting jealous when their partner talks to other individuals is a sign of possessiveness and insecurity. Even though the person has a girlfriend, their feelings of jealousy and possessiveness suggest that they are not entirely secure in their relationship. It is important for both parties to communicate openly and honestly about their feelings and expectations in the relationship. It's essential to establish boundaries and respect each other's space and independence.