Demi Lovato's new music is probably giving their ex a "Heart Attack." In a song leaked on TikTok, Demi calls out a relationship they had when she was just 17, and he was 29. Fans are doing the math, and are convinced she's singing about a former "That 70's Show" star they started dating back in 2010. But this celebrity age gap thing is nothing new - men in entertainment get away with dating younger people all the time. So, in Hollywood -- is age just a number?
