Board Thread:General Discussion/@comment-10529169-20150620221446/@comment-26462356-20150621213238

It is easy to get someones DNA, even without them knowing it. Just get a glass they just drank from and take a swab. Or she might have asked him for a cheek swab. If she told him she thought she might be able to use it to get pregnant, even if she did not tell him how, he would probably have agreed.

You can buy a DNA collection kit in most drug stores for around 40 dollars (US).