What do you mean, she brought her best friend to dinner? There are only three possibilities for her to do so.

When a boy asks a girl he likes out for dinner, he definitely wants to have a chance to be alone with the other person. But what if girls bring their girlfriends at this time? Invite a girl out to dinner. She brought her best friend. Do you know what this means? In fact, there is no need for boys to think too much about this situation. Although it is inconvenient for three people to eat, it is always easier for three people to eat than for two. She brought her best friend, perhaps to avoid embarrassment.

Maybe it's because she thinks she doesn't know you well, and eating alone will be embarrassing. She probably brought her best friend to give herself courage and support. For her, she may think that having a best friend will make her less embarrassed and worry about what you will do to her. However, this kind of girl forgets to think from your point of view. She doesn't think of you, only cares about her embarrassment, but ignores your position and situation.

There is another possibility for a girl to date her best friend, because she wants her best friend to give her advice, and she wants her best friend to give her advice. She is an indecisive person. She may have a crush on you, too, but she hasn't let her guard down. She is worried that she will be cheated and hurt in the end, so she will bring her best friend to dinner with you and let her watch for her as a bystander to see if you are reliable and worthy of communication.

Of course, there is another possibility that girls and girlfriends ask you out. She is not interested in you at all, but she didn't refuse you. She brought her best friend with her, purely for eating, in line with the principle of not eating for nothing. Or, her best friend is interested in you and wants to introduce her to you. If you meet such a girl, then you don't need to continue chasing her. See the reality as soon as possible. Why waste your time on someone who doesn't like you?