You should've said NO

Even now just looking at you: feels wrong .
You say that you'd take it all back, given one chance
It was a moment of weakness and you said yes...
You should've said no
You should've gone home
You should've thought twice before you let it all go!
You should've know that word, bout what you did with her
Would get back to me...

And I should've been there, in the back of your mind, I shouldn't be asking myself: why?
You shouldn't be begging for forgiveness at my feet...
You should've said no, baby and you might still "have me".