La, la, la   La, la, la   Ohh      It's not that serious   I never put that much thought into us   It wasn't that I loved you, I was curious   Who did you think that you were involved with?   Now baby you should know it's not that serious      How could you tell me that you love me   When I knew you were just tryin' to play me   But you're the fool   'Cause I know how to switch the game upon you   And in the end I know who will lose   I played this game before   Can't play no more   Do you take me for?   It's not what you thought   Don't play games with me   'Cause I came to teach   And if you want to cheat   It won't be with me      It's not that serious   I never put that much thought into us   It wasn't that I loved you, I was curious   Who did you think that you were involved with?   Now baby you should know, it's not that serious      It should concern you that I'm always one step ahead of you   So that should let you know that what you do   I have done before, it's nothing new   So run those games on someone who can't be fooled   I can almost see   That's gonna through your teeth   In every word you speak   You make it clear to me   That you're playin' wrong   And your game ain't strong   I've been in this too long   So just be movin' on      It's not that serious   I never put that much thought into us   It wasn't that I loved you, I was curious   Who did you think that you were involved with?   Now baby you should know, it's not that serious   I never put that much thought into us   It wasn't that I loved you, I was curious   Who did you think that you were involved with?   Now baby you should know, it's not that serious      [Foreign content]   Don't play games with my heart   I will let you go before you start      It's not that serious   I never put that much thought into us   It wasn't that I loved you, I was curious   Who did you think that you were involved with?   Now baby you should know it's not that serious   I never put that much thought into us   It wasn't that I loved you, I was curious   Who did you think that you were involved with?   Now baby you should know it's not that serious