When did you know that your partner was "the one"? Was it something like love at first sight or did they have to grow on you/win you over?

I knew that he's the one because he's so different from all of my past BFs. During our first date as a couple I never expected him to bring me to church instead of some other fancy places. We went into the prayer room, kneeled and closed our eyes to pray. After we finished praying I asked him what did he prayed about. He said it's a secret 😁 but gave me a hint that it's something to do with us and with our relationship. ❤️ I was really touched.