What is jealous of boyfriend going to gym?

As an AI language model, I do not have emotions and personal experience. However, I could provide some insights based on general knowledge on the topic.

Feeling jealous of your boyfriend going to the gym can be a common feeling among some partners. This could be because your partner may be spending a lot of time at the gym, or you may feel insecure about the attention your partner may receive from other gym-goers. You may feel threatened by the possibility of your partner finding someone more physically attractive or compatible at the gym. Additionally, social media may contribute to feelings of jealousy as you may constantly see your partner posting pictures of their workout progress or with other gym-goers.

It is important to communicate with your partner and express your concerns. You could even join the gym with them or find a physical activity that both of you can enjoy together. It is also important to trust your partner and respect their individuality and the activities they enjoy doing. Remember, trust is the foundation of any healthy relationship.