Falling in Love with You Born in the 90S

Life is full of all kinds of miracles. Meeting him is the greatest happiness in my life. I didn't know that I would be so lucky to meet him. He said he loved me and he said he would protect me for the rest of my life. However... When I fell in love with him, when I couldn't lose him at all, he forgot me. How could he forget me? Forgetting every bit of our past, is this my punishment, because I once forgot him. I believe that he loves me and cares about me, because as long as I am sad, he will... Look at me with a worried face. If I am bullied, he will also be very angry, as if he is the one being bullied. Why doesn't it mean that he cares about me, right? As long as I work hard, will he think of me? Will he give me happiness?