Macaulay Culkin couldn't help but gush about how "proud" he is of his two kids he shares with fiancée Brenda Song. "There's a word that I use in my household because it's something that I didn't really hear enough of when I was a kid," Culkin, 45, explained on a Tuesday, December 16, episode of YouTube's Mythical Kitchen channel. "And that's 'proud.' Man, I'm proud of my kids." The Home Alone star - who shares sons Dakota, 4, and Carson, 3, with Song, 37 - went on to say even though he had the "number one movie in America" he "never got the 'p' word" from his parents. "My kid, he does his recital and the curtain opens and he's really excited about it. He's going to play a bug," Culkin recalled. "As soon as the curtain opens, he freezes, he cries and he runs off stage. And so I go and scoop him up. And the first thing out of my mouth is, 'Man, I'm so proud of you. You were so brave to go out there like that. Like you did that? Like there's so many people! ... I love your costume. I'm proud of you.'" Macaulay Culkin's Son 'Can't Stop Playing' With Hollywood Walk of Fame Star Culkin noted that he's "proud of [himself]" that he could "provide" for his family "in that kind of way" and that he can "love [his] family the right kind of way." After the actor explained how the thoughts of ending up like your parents could "haunt you," he gave a shout-out to Song for teaching him how to be a better father. Apu GOMES / AFP "The way I learned to be a father is through Brenda," Culkin added. "Brenda is such a good mother and she makes me want to be a better father, a better person and a better father. I see how good she is and I see how happy our kids are. I go, 'OK, like, yes, don't listen to me.'" Culkin and Song started dating in 2017 after being spotted holding hands at Knott's Berry Farm. The couple welcomed their first son, Dakota, in April 2021 before getting engaged in January 2022. "They are and always have been very in love with each other," a source told Us Weekly shortly after their proposal. Brenda Song and Macaulay Culkin Son Dakota, 3, Thinks He's Kevin McAllister The same year of their engagement, Culkin and Song secretly welcomed their second child, son Carson. Although Culkin and Song have kept their relationship relatively private throughout the years, the pair opened up about their romance in a rare joint interview for Cosmopolitan's Love Issue in January. "I'd never felt this way before," Culkin recalled to the outlet of when he started dating Song. "I believed in her. I mean, I believed in people before, but I believed in her down to my bone marrow. You know what I mean? I put it behind the armor though, behind that shield." Meanwhile Song shared that when she met Culkin, he made her "such a bigger person." "When I met Mack, there was so much more of me that I hadn't figured out," she explained. "He made me such a bigger person and I was like, 'Oh my God. I didn't realize that there were so many things I didn't know about myself."