《Heart Beat》的完整歌詞如下：
女：
Everytime my heart beats
男：
It might be your heart beat
女：
Everytime your heart beats
男：
It might be mine
女：
Everytime I feel the warmth from your eyes
男：
It shows that I fall in love with you
女：
And everytime I see you smile
男：
My heart beats, beats, beats, beats, beats, faster now
女：
Oh oh oh oh oh oh oh
男：
I know I fell in love with you from the start
女：
And everytime you near me, I can hear your heartbeat too
女：
It might be our hearts beating together
男：
And I don’t care about anything else
女：
‘Cause I can hear your heartbeat, your heartbeat, your heartbeat now
男：
Everytime I close my eyes, I dream about you and me
女：
It’s the only way I ever thought about sleeping, yeah (男rap)
男：
If we were meant to be together, we would just keep on beating, yeah (女rap)
合：
Everytime my heart beats, it might be your heart beat (男rap)
男：
Everytime we’re together, I feel the warmth from your eyes (女rap)
女：
Everytime we’re together, my heart beats faster now (男rap)
男：
Everytime we’re together, it’s like our hearts were beating (女rap)
合：
Together, together, together now (男rap)
Everytime my heart beats, it might be yours or mine (女rap) 女：Every time I look into your eyes，I feel like I could fly so high 男：Every time I feel your touch，my heart starts to beat a rhythm 女：Every time I think of you，my body starts to tremble 男：Every time I see you smile，I feel like I could face anything 合：And every time we dance the night away，I know these moments are forever 女：Oh oh oh oh oh oh oh 男：I fell in love with you from the start 女：And every time we’re together，I feel the warmth from your eyes 男：And every time I hear your heartbeat，my own starts to race 合：Oh oh oh oh oh oh oh 讓我們一起跳動 合：Oh oh oh oh oh oh oh，讓我們的心跳證明我們的愛情 合唱版《Heart Beat》是由泰國偶像組合BTS演唱的，旋律輕快，充滿活力。歌詞中表達了對愛情的嚮往和堅定，同時也展現了歌曲的獨特魅力。