What is girl has boyfriend but shows interest?

As an AI language model, I don't have access to personal information or stories of individuals. However, in general, it is possible for a girl to show interest in another person even if she has a boyfriend. It could be a result of having a natural social and friendly personality, or perhaps she may feel bored or unfulfilled in her current relationship. It's important to respect her boundaries and understand that just because a girl shows interest doesn't necessarily mean she's looking to cheat on her partner. Communication and honesty are keys to any healthy relationship, and it's important to have open and clear communication with partners regardless of the situation.