It's official: Mila Kunis and Ashton Kutcher are getting married!

On Thursday, E! News exclusively reported that the former stars of That '70s Show are engaged. They began dating in the spring of 2012, about seven months after Demi Moore called it quits with Kutcher. The future spouses have said little about their romance, save for a March 2013 interview with Elle. "People will fill in the blanks however they want," Kutcher said when he was asked about dating Kunis.

Following his November 2011 split with Moore, Kutcher became more guarded about his personal life. "You know, I've learned the hard way how valuable privacy is," he explained. "And I've learned that there are a lot of things in your life that really benefit from being private. And relationships are one of them. And I am going to do everything in my power to have this relationship [with Kunis] be private."

While neither Kutcher nor Kunis may be willing to talk about their romance, their PDA-packed trips around the globe certainly speak for themselves. As E! News celebrates their engagement, check out eight other costar couples who got engaged—and find out which ones have already tied the knot!