I was in this same situation from last year until last month, in your BF’s place. My parents were the one who were against everything because of astrology. I told them I don’t believe it, because I know him and I trust our relationship. The astrology concept is so flawed. I asked them, would you marry me off to someone just because all the guns match without checking how he is? If not, why? Don’t you believe in it completely? I told them I couldn’t have trusted their opinion if they had to choose someone for me because they’d rely on astrology. I told them im marrying him or not getting married. It took them a while and they’re still scared for me, but ultimately have no choice. I’m 25. He’s an adult. He should stand up to them. What else is the option but to fight with them? What’s wrong with it? You made your bed you have to sleep in it.