My ex has kids and during the time I've known her I got close to them. we bonded and even till this day I stay in contact with them. They are nice and joyful kids on the brink of being an adult now. Two had their birthday already and I've send them cards. I used to send them gifts, but since my life took a new direction with a new girlfriend I distanced myself a bit, so for now it's only cards and e-mails I share. But it turns out the dad of one of them didn't even send out a card. It makes me wonder. What is the motivation of making a child and then stop every contact? To me it doesn't make any sense. I am not a big fan of birthdays, but I wouldn't want to miss the one of my son or daughter for anything in the world. So I will keep on sending cards. It is always nice to make someone smile.