Huffpo is such a paragon of journalistic truth and righteousness.
Let me help you with a link to the actual study.
https://ifstudies.org/blog/does-sexual-history-affect-marital-happiness
Huffpo referenced the agency who did the study.
Don’t bich about the fact you don’t like a source when it names the source of the study. Geez.
Further more than one group has studied this. I just pulled up one I could find with a simple search.
I’ve read one of the studies and they found what I said. If you don’t want to believe it because I don’t have a page for you, fine. i don’t care. I know what I read. Put your head back under the sand.