Well that certainly backfired spectacularly.
A fairly common thing to do these days is have your DNA tested, its easy, relatively quick and lets you find out some interesting things about your heritage.
And recently a couple (who remain anonymous) decided that they'd give it a go just for a bit of fun... but it turned out to be anything but.
The a woman, 27, and her boyfriend, 26, were excited to find out some interesting things about their ancestors.
However, what the boyfriend discovered would haunt the pair for months to come.
Taking to Reddit, the man claims the results of the test led his girlfriend breaking up with him because of his family's past.
He says the results from ancestry.com uncovered a very dark family secret and his partner simply couldn't get over it.
He explained: "A month ago my girlfriend and I thought it would be fun to do the DNA test offered by Ancestry.com to learn more about our family tree.
"They really give you a lot of info and it took a while to go over.
"We were having a lot of fun with it but then I found something out about one of my ancestors that has now caused me to lose my girlfriend.
"There were a few names in my family tree that I did not recognise and after doing some research it turns out that one of my ancestors was an infamous serial killer."
'Evil blood.'
Understandably the man was horrified to learn this and decided to ask his family if they knew about it.
He says they did, but have tried their best to disassociate the family from this person.
His girlfriend was clearly disturbed by the discovery, but he assumed she'd get over it eventually.
Unfortunately, he was wrong.
"This weekend my girlfriend wanted to meet to have a serious discussion with me.
"[She] broke up with me because she could not deal with the fact that I'm related to a serial killer. She told me that she loves me very much, but explained that the fact I had the same blood as someone so evil has made her look at me differently."
Better off without her.
After this revelation, the man then asked the people of Reddit if they had any advice on how he could win his girlfriend back.
People were shocked by the woman's behaviour and told the man he was better off without her.
One person commented: "If she let ancestry.com results come in the way of your relationship, her foot was already half out the door and she was just looking for an out."
Another replied: "She was either looking for an excuse or she was a complete moron. Either way OP is better off."
