Source: Bang Showbiz NewsBackstreet Boys singer A.J. McLean thinks 'Gangster Squad' actor Ryan Gosling would make an excellent Backstreet Boy.The singer and the 'Gangster Squad' actor used to live in the same apartment block in Orlando, Florida before they became famous and while Ryan recently claimed A.J. never answered his calls once the Backstreet Boys found success, A.J. insists Ryan could be the sixth member of his boyband.He told TMZ: "I just want to say to Ryan, I am so sorry I didn't call you back. Dude, first of all I don't even have your number. When I see you at the gym, you know which gym, let's finally exchange numbers and if we ever need a sixth Backstreet Boy I will call you. He can sing, Ryan can sing his ass off."A.J. then went on to praise Ryan's many talents and admitted his wife Rochelle Karidis - who gave birth to the couple's first child in November - is "obsessed" with the 'Notebook' star.He said: "Not only are you a talented actor and a handsome man but a great singer. My wife is obsessed."