Question: Who sang is she really going out with him?
Disambiguated questions and answers: question: Who sang the original version of "Is She Really Going Out With Him?"?
Who sang a version of "Is She Really Going Out With Him?" on their album In the Pursuit of Leisure?
Who sang a version of "Is She Really Going Out With Him?" in their album Dear Diary?
Who sang a version of "Is She Really Going Out With Him?" in their album The Life and Times of Mike Manning?
answer: Joe Jackson
Sugar Ray
Kid Courageous
Da Vinci's Notebook
Natural Questions answer: Joe Jackson (from the Wikipedia article "Is She Really Going Out with Him?")