Jealousy in relationships can stem from various underlying reasons, and it’s important to address them with empathy and understanding. Here are some potential reasons why your girlfriend might feel jealous of other girls who study with you:

1. Insecurity: Your girlfriend may feel insecure about her abilities or attractiveness compared to the other girls who study with you. She might worry that you’ll be more interested in these girls because of their academic success or other qualities.
2. Fear of Losing You: Jealousy can sometimes arise from a fear of losing the person you care about. Your girlfriend might be concerned that spending time with other girls, especially in an academic setting where you’re working closely together, could lead to emotional or romantic connections that threaten your relationship.
3. Past Experiences: Your girlfriend’s jealousy might be influenced by past experiences, such as being hurt or betrayed by someone close to her. These past experiences can lead to trust issues and heightened sensitivity to situations that trigger feelings of jealousy.
4. Lack of Trust: Trust is a foundational aspect of any healthy relationship. Suppose your girlfriend doesn’t fully trust you or feels insecure about the strength of your relationship. In that case, she may be more prone to experiencing jealousy, especially in situations involving interactions with other girls.
5. Communication Issues: Sometimes, jealousy arises due to misunderstandings or lack of communication. Your girlfriend might not fully understand the nature of your interactions with these other girls or may have concerns that haven’t been addressed in your conversations.
6. Personal Insecurities: Jealousy can also be a reflection of your girlfriend’s insecurities or past experiences. She may struggle with feelings of inadequacy or low self-esteem, which can manifest as jealousy in certain situations.
7. Cultural or Societal Influences: Cultural or societal norms around relationships and gender roles can also play a role in shaping how individuals perceive and respond to jealousy. Your girlfriend’s feelings of jealousy may be influenced by societal expectations or beliefs about fidelity and romantic relationships.

It’s essential to have open and honest communication with your girlfriend about her feelings of jealousy. Try to approach the conversation with empathy and understanding, and listen to her concerns without dismissing them. Reassure her of your commitment to the relationship and address any underlying insecurities or trust issues together. Building trust, fostering open communication, and reaffirming your commitment to each other can help alleviate feelings of jealousy and strengthen your relationship. If the jealousy persists and significantly impacts the relationship, consider seeking guidance from a couples therapist who can provide support and guidance in navigating these challenges.