YOU SAID:
I am so happy that you exist
INTO JAPANESE
私はあなたが存在することをとても嬉しく思います
BACK INTO ENGLISH
I am very pleased that you exist
INTO JAPANESE
私はあなたが存在することを非常に嬉しく思います
BACK INTO ENGLISH
I am very pleased that you exist
Come on, you can do better than that.