Libra people have a strong sense of justice, but in the face of interests, everyone will choose to be partial to themselves. Libra people wouldn't choose to make so many friends if it wasn't for more benefits. Libra people can only get some benefits from making so many friends. This is normal, human nature. No one will treat you unconditionally except your parents.
In fact, I think Libra is also the most hypocritical constellation, because they can be very good friends with anyone. But although he is so kind to you, are you really his friend? In fact, you may be nothing in his heart! This is the hypocrisy of Libra. He can be kind to everyone, but only on the surface, just hoping to get this person's help when needed in the future.