A colleague has recently found out that he has a son who is in his 30s.
I don't know the full details, or how the son found him, but apparently my colleague was working in Canada for a while and slept with a girl there, and here we are 30 years on!
My colleague (and his wife) are really happy about it and are going to meet up with him.
It made me wonder how often this sort of thing happens and whether mums make a conscious decision not to tell the baby's father they are pregnant?