 The song is written from the perspectives of Keys and Usher , who play the role of an ex @-@ couple . For him , Usher and Keys " talk about how they used to be in love and how those feelings are still lingering despite the two not being involved anymore . " For Keys , " The song is talking about the first person you ever really had feelings for . Even though you move on and meet new people , you always remember that first person . " 
