If you mind, of course you should tell your girlfriend directly that you don’t like her to have too much contact with her best friend.

Since best friends are gay, sometimes they may have some overly intimate behaviors. These behaviors may seem normal in the eyes of others, but only you know that this kind of behavior may be too intimate. You can't accept the behavior and feel uncomfortable watching it, but you still have no way to stop your girlfriend's behavior.

And girls whose sexual orientation is female can give girls ambiguity and sweetness many times better than straight men. They understand girls’ thoughts very well, and know when girls need companionship and when they need care. When do you need to rely on it? They all understand that they might lose their girlfriends at some point.