A pair of psychologists who have studied couples for decades share some formulas this Valentine's Day they say can make or break a relationship. https://www.kare11.com/article/news/local/kare11-extras/can-math-equation-predict-future-of-your-relationship-these-love-doctors-say-yes/89-f66f5286-23b7-4127-a234-89e1d8033b98 Welcome to the official YouTube channel of KARE 11 News. Subscribe to our channel for compelling and dramatic storytelling, award-winning investigations, breaking news and information you can use. » Subscribe to KARE 11 on YouTube: https://www.youtube.com/subscription_center?add_user=kare11 » Watch more KARE 11 video: https://www.youtube.com/user/KARE11/videos » Visit KARE11.com: http://www.kare11.com/ » Download our app! https://www.kare11.com/appredirect/ » Find KARE 11 on Facebook: https://www.facebook.com/KARE11/ » Follow KARE 11 on Twitter: https://twitter.com/kare11 » Follow KARE 11 on Instagram: https://www.instagram.com/kare11/