Should've Said No

It's strange to think the songs we used to sing
 The smiles, the flowers, everything is gone
 
 Yesterday I found out about you
 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 'fore you let it all go
 You should've known that word
 'Bout what you did with her'd 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
 ♪
 You can see that I've been crying
 Baby, you know all the right things to say
 But do you honestly expect me to believe
 We could ever be the same
 You say that the past is the past, you need 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 'fore you let it all go
 You should've known that word
 'Bout what you did with her'd 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
 Oh-oh-oh
 
 I can't resist, before you go, tell me this
 Was it worth it?
 Was she worth this?
 No, oh no, no, no, no, no
 You should've said no, you should've gone home
 You should've thought twice 'fore you let it all go
 You should've known that word
 'Bout what you did with her'd 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