Jennifer Aniston is having a tough with the loss of Matthew Perry. Less than a year after losing her father, John Aniston, Jen is reportedly devastated over Perry's apparent drowning in a hot tub at his Pacific Palisades home. “Out of the remaining five, Jen and Courtney [Cox] are reeling the most, and Jen is probably the one who is struggling most acutely,” a source told Page Six. The insider continued: “It's a second massive loss in less than a year, with the one-year anniversary of her dad's death just around the corner. She still hasn't fully regained her footing from that, and now this has just completely knocked her off her feet.”