"Forever" 是 Junjin 的歌曲 "Day by Day" 的副歌部分歌詞。以下是這首歌的部分歌詞：
Day by day, I'm falling in love with you
Day by day, I'm wanting you more and more
Day by day, I'm feeling my heart beat faster
Day by day, I'm feeling my love for you grow stronger
Forever and ever, I'll be with you
Forever and ever, I'll love you
Forever and ever, my heart will be yours
Forever and ever, my love will never fade
Day by day, I'm feeling the magic of our love
Day by day, I'm feeling the wonder of our dreams
Day by day, I'm feeling the beauty of our future
Forever and ever, I'll be with you until the end of time
重複上面的副歌部分，直到歌曲結束。
注意：歌詞可能會根據不同的版本或現場表演有所不同，但上述歌詞是常見的版本。