This article centers around a claim that is difficult to measure through quantitative, statistic data that can prove the levels of happiness and if they are caused statistically on relationships. Additionally, while happiness is subjective, it's a topic that seemingly varies from person to person. Buzzfeed is less known for being a credible news source and more so for their games, quizzes, and "attention grabbing" headlines that can grab readers' eyes and attention for clicks and views.
Another article I found from a more credible topic, has a similar headline to grab attention, but poses it in a question format so readers must read to find the answer and prevent them from spreading quick fake news. As the article goes on, it eventually states that "There's actually not a lot of difference between the kinds of people who are happy single, and the kinds of people who are happy in relationships".
The takeaway from this article is that happiness linked to relationships is not necessarily due to being in a relationship itself, but rather the attitudes and beliefs individuals hold about relationships. Ultimately, the connection between happiness and relationship status is complex and doesn’t offer a one-size-fits-all answer. The key factor in determining relationship-based happiness seems to be less about whether or not you are in a relationship, and more about your approach to it and how you view it.
https://www.cbc.ca/news/canada/single-life-happiness-1.7135837