What is my girlfriend makes me feel insecure?

As an AI language model, I do not have access to your personal life or relationship. However, feeling insecure in a relationship could stem from a variety of reasons, such as past experiences or communication issues with your partner. It could also be due to your own personal insecurities and self-doubt. It may be helpful to talk to your girlfriend about your feelings and find ways to improve communication and trust within the relationship. It may also be beneficial to work on building up your own self-esteem and addressing any underlying issues that may be contributing to your insecurity. Seeking out therapy or counseling can be a helpful resource in this process.