DNA Testing can go horribly wrong.

[Rosinish]

Also don't fall out, there are genetically scientific proven reasons why a person's DNA doesn't match their Father's or Mother's DNA.

Not knowing about a secret, I might be a little frustrated, but life is simply too short to fall out with family or anyone else, for that matter.

When someone tells a lie, to cover up a non-criminal secret, what about the spirit of forgiveness, when they admit the truth and show sorrow and remorse?

Martin, I can't agree more (both DNA and Paper trail documented research), when you delve into Family History you can also expect to find anything.

Mark

I don't think it was the OP who fell out with anyone although I may be wrong?

There are different ways to look at things & here's an e.g...

I knew someone who was with child prior to meeting her future hubby who took on the responsibility of the child, signed at the registrars although not 'Adopted'.
The 'Paper Trail' certainly wouldn't match the DNA & to my knowledge the child was never told his 'Father' was not his Father!

I knew another who was the child of his 'Sister', brought up by his g/parents & the truth was blurted out to the child when approx. 15 yrs old when the 'Mother/grandmother' was intoxicated & annoyed with her daughter, the true mother/'sister'...not very nice at all!

Annie

[Jackiemh]

I admit that I haven't done a DNA test yet.
When I began to research family history for my close family, I was fairly certain that I would find some things that I would find confronting and I have - murder, manslaughter, poverty, bigamy, illegitimacy, bankruptcy for example and some of those in the last 100 years. It would be a very rare family who didn't have such events in their history.
It seems that the DNA testing merely highlighted what may have occurred quite recently.
I do feel that results should be treated with caution and for people to remember that they, the results, will affect more people than the actual person who did the test.

[Mart 'n' Al]

Schnortles, did you just say "serial cow rapist "?

Martin

[DavidG02]

Genealogy Guys podcast (google name) have just released an episode where Shannon Coombs-Bennett shares her thoughts on adoption and DNA and has some tips

Shannon Combs-Bennett is a popular genealogy speaker and writer. Her new book, co-authored with Brianne Kirkpatrick, is entitled The DNA Guide for Adoptees: How to Use Genealogy and Genetics to Uncover Your Roots, Connect with Your Biological Family, and Better Understand Your Medical History.

[Craclyn]

Sometimes the surprises can be met with a positive attitude and acceptance. A few days ago I was able to help a young woman who knew little about her paternal line to find and establish contact with two half siblings.