This song is from the Simpsons' episode "Homer Simpson, This Is Your 
Wife" (S17E15), written by Ricky Gervais.

Ricky, as Charles, sings for Marge:

C (x32010@1)           F (133211@1)         Am (x02210@1)          GLady (320003@1)when you came to me, I was feeling blue
C (x32010@1)                 FBlue (133211@1)just like your hair, you see
Am (x02210@1)               GBlue (320003@1)just like the moon
    C (x32010@1)           FBut (133211@1)only when the moon is blue
    Am (x02210@1)           GAnd (320003@1)not when it is cream
    C (x32010@1)              FAnd (133211@1)now that you are here with me
Am (x02210@1) G (320003@1)  CI (x32010@1)am in a dream

(Oh, yeah, Marge, your dreams can come true.)

C (x32010@1)            FLady, (133211@1)when you go away
  Am (x02210@1)              GI (320003@1)feel like I could die
C (x32010@1)                    FNot (133211@1)like dye like your hair is dyed
    Am (x02210@1)          GBut (320003@1)die like Lady Di
    C (x32010@1)                  FAnd (133211@1)not like Di like her name is Di
    Am (x02210@1)              GBut (320003@1)die like when she died
    C (x32010@1)            FBut (133211@1)lady just like Lady Di
   Am (x02210@1)   G (320003@1)    CBe (x32010@1)my princess tonight
           CBut (x32010@1)don't die
      CDon't (x32010@1)die.