The almonds can grow together, but souls cannot grow like that, for each soul has its Nafs, its ego, and each soul wants to push itself forward. It does not mean that man has no love, but that man puts his ego before love; that is the general feeling. One may not realize it, but it is so; and that is why those who are meant to become twin souls are often denied that privilege only because they will not give in to one another.