My old flatmate was banging a girl he met off an internet dating site, she was a right minger but it was a case of 'any port in a storm'.
Anyhow, he stops seeing her and lo and behold three months later she contacts him saying she's pregnant. Not sure if its his though as her new bf is black and my mate is white, so will wait till its born. Nice.
So the baby is born, its white, and my mate takes it like a man and resolves himself to being involved with a kid who's mum he doesn't even really like. She's sending him baby pics and organising family outings etc. His parents recommend he does a DNA test, just to be sure. She's all like 'it could only be his or her bf's, so as it's white then its my mates' etc etc. But he gets her to agree to the test just for his parents sake.
It turns out not to be his(!) and he emails her the results for her to reply 'sorry to of inconvenienced you'. I feel sorry for the kid, having to wait now whilst his mum tries to figure out who the dad really is! I just could not believe she was soooooo sure it was her bf's or my mates, and it turned out to be some unknown 3rd party.
So, make sure you get a paternity test ffs!