Matt Damon gave his thoughtful two cents on marriage when Entertainment Tonight asked how his childhood friend Ben Affleck is doing in the wake of his split from Jennifer Garner. "He's good," Matt said, adding, "I think marriage is insane. Like, it's a crazy idea, but I love being married to my wife, you know what I mean? So I wouldn't tell anybody else anything about their relationship." The actor sweetly gushed about his other half, saying, "I'm lucky I found my wife. And I guess, maybe, if there's any secret, it's that: it's to feel lucky." Matt and his wife, Luciana Barroso, will celebrate their 10th wedding anniversary in December, and they recently stepped out for a sweet date night together. Check out the trailer for Matt's new movie The Martian, and then see Matt and Ben's cute red carpet appearance from earlier this month.