This easter egg seems to be part of Google's effort to make Valentine's day special for users across its web properties, with other tricks including a heart-filled +1 action on Google+ (seen below) and Google's "special edition" reCAPTCHAs.
This easter egg seems to be part of Google's effort to make Valentine's day special for users across its web properties, with other tricks including a heart-filled +1 action on Google+ (seen below) and Google's "special edition" reCAPTCHAs.