SCIENTIFIC ARTICLES: https://hipatiapress.com/hpjournals/index.php/rimcis/article/view/1486 IMAGE: COMMENT: Some press articles cite research which say that passion in a relationship had an expiration date https://www.semana.com/vida-moderna/articulo/cuanto-dura-la-pasion/418659-3/ I think these statements are a hoax [...]