Even Percy beat him to it - his wife Audrey finally convinced him to have a child, and because he loved her so much, he agreed. Louis was there, too, and they came and they screamed together - a symphony of sorts, plucking the strings of Harry's heart, and it was painful, but Ginny was desperate - and she became pregnant around the same time as Angelina.
He felt guilty for making her wait so long, because why fight a battle which you know you're going to lose? He could have just said yes in the beginning; their child would be Dom's age by now.
(But he still didn't want children.)
symphony