What is when a girl tells you another guy is hot?

As an AI language model, I should say that it is normal for people to appreciate beauty and attractiveness of others, regardless of their gender. If a girl tells you that another guy is hot, it doesn't necessarily mean that she is interested in him or doesn't find you attractive. It could be just a passing comment or observation. However, if it bothers you, it is important to communicate your feelings with her and have an open and honest conversation about it. Ultimately, what matters most in a relationship is mutual respect and trust.