Ashton Kutcher [1] and Mila Kunis [2] have the sweet support of their That '70s Show costar Topher Grace [3]. Last week, Topher and his fiancée, Ashley Hinshaw, made a cute red carpet appearance [4] at the Hollywood Foreign Press Association's Grants Banquet in LA, and during the event, the actor told E! News that Ashton and Mila are "the greatest." [5] He said, "It's the greatest thing that ever happened," adding, "It's like two of your great friends from high school got together after high school and had a baby. And they're such a lovely couple." Topher also gushed about the couple as he got a bit nostalgic for the show, saying, "I love those guys. It's great to know they're together. You want to all stay together when you're on a show like that . . . They get to stay together forever."