Maggie Gyllenhaal is revealing how she really felt about her brother Jake Gyllenhaal's early career success. "In general, I am very interested in envy," Maggie, 48, said during a Saturday, February 28, interview with The New York Times, when asked about a "sibling rivalry" between her and Jake, 45. "I think there's a reason it's a seven deadly sin. I'm interested in it in terms of watching other people's movies come out. Admiration versus envy. What creates it? I think it's usually feeling starving, like you don't have enough.