It's so frustrating to see another girl in your mutual friends group or acquaintances flirt with your boyfriend in public. It's a very unpleasant situation, and you don't know how to deal with it. Women usually approach it in two ways. Either they overreact and show that they are insecure or they do nothing which sends a message that the girlfriend is weak. You can handle this situation without creating a scene if you do it smartly. Men are a little clueless when a female friend tries to be very close, touches him a lot, and shows interest in him. It's important to keep your anger in control and not let jealousy and anger take control of you. So, stay calm and think about what to do if another girl likes your boyfriend.