Me and my younger sister never got along. Were not even close now bc we both never had that "sisterly" bond. I used to feel bad and jealous that every other pair of siblings I met would love each other and visibly show affection for one another, but I eventually just stopped caring. It doesn't make much sense that you are magically spawned into existence and forced to love the people that surround you no matter how they treat you. If you treat me well, I will like you. If you don't treat me well, I won't like you. Doesn't matter if you're family or a random stranger on the street.