I've heard the rumors going round the town You think you're playing me for a fool But everybody's seen you sneaking around You and baby sister thinking you're so cool You used to love me Till you met my baby sister You used to love me Till you met my baby sister The trouble started when I brought you home to meet my friends and family The love you had for me went right out the door When you saw my baby sister in her tight blue jeans You used to love me Till you met my baby sister You used to love me Till you met my baby sister Well, I know I shouldn't be blaming only you I'm sure my baby sister played her part But then the worst of my nightmares all came true Just like a knife in my heart I saw you both in the dark Baby sister So when you take her to your mountaintop To show her what your love's about I hope the moon is shining extra bright Cause that's where you'll be living when my daddy finds out You used to love me Till you met my baby sister You used to love me Till you met my baby sister She's so cool in her tight blue jeans Gonna be in trouble when our daddy finds out You used to love me Till you met my baby sister You used to love me Till you met my baby sister