Michael Bolton "Once in a Lifetime"

The 1994 chick flick rom-com Only You featured the ballad "Once in a Lifetime" from Michael Bolton. The song found room on Adult Contemporary radio stations with the names like "The Lite", "Warm" and "Sunny".

Eric Clapton - "Blue Eyes Blue"

Every chick flick requires a ballad to make the movie complete.  For the 1999 film Runaway Bride, that meant enlisting the help of Eric Clapton for the Diane Warren-penned song "Blue Eyes Blue".  While the song didn't top the mainstream radio charts, "Blue Eyes Blue" did spend a great chunk of 1999 in heavy rotation on Adult Contemporary radio stations.