Playing with fire, blood, sweat and tears.

Her mom always told her to be careful with guys, because love is like playing with fire, she'll get hurt.
His blood, sweat and tears, his last dance, he told to take it all.
He's the flame that she plays with.
She's the whiskey that he drinks.

They are playing with fire, blood, sweat and tears.

Jennie is playing with Fire.
Jimin is playing with blood, sweat and tears.