Culkin has been open about suffering a difficult relationship with his own father, Christopher “Kit” Culkin, but the My Girl actor feels “proud” of himself for being able to “provide” for his family.
And he has credited his partner, actor Song, 37, for helping him to be a “better father”.
He said: “Brenda is such a good mother and she makes me want to be a better father, a better person.
“I see how good she is and I see how happy our kids are.”
Earlier this year, Culkin told how he hadn’t spoken to his dad in “30-something years” and in November the star said his dad deserves to “die alone”.
He told Deadline: “He had seven beautiful kids and now he’s got five beautiful grandkids. None of them want anything to do with him. Nothing. As far as I know.
“Listen, if my siblings want to have their relationship with him, they can. Whatever. I have these beautiful kids at home and I don’t want his sins being washed on my kids.
“That’s not the way that I do business, and that’s why he needed to go over... there.
“And he’s going to sit there and he’s going to probably die alone and I’m going to go like, ‘Yeah, that’s what you deserve’.”