The couple - who have been dating since earlier this year - reportedly dined with the `Horrible Bosses` actress` dad John Aniston at Delmonico`s Steak and Lobster House in Los Angeles three weeks ago, and the showbiz patriarch was "impressed" with her new boyfriend. A source told Grazia magazine: "Jennifer is extremely close to her father, so it`s important that he and Justin get along. At the meeting she was nervous because it really was a very special event for her. "Thankfully, John was impressed with Justin, and it all went very well indeed." After Justin`s successful meeting with Jennifer`s dad, the `Mulholland Drive` actor is now said to be keen to introduce the 42-year-old actress to his own parents, Phyllis and Eugene Theroux. The insider added: "Now that Justin has met Jennifer`s father, he is desperate for Jennifer to meet his parents. "He thinks they`ll fall in love with her, especially his mother, because she and Jen have a similar sense of humour." Just last week, the former `Friends` actress met Justin`s documentarian cousin Louis Theroux at exclusive London venue Shoreditch House, following the UK premiere of her new film `Horrible Bosses`. A source said: "Louis obviously approved of Jennifer. It looked like they were having a great time, and they all seemed instantly at ease with each other. "Justin looked proud of Jen and seemed quite manly and protective."