The 'grandfather of online dating' reveals the 3 crucial questions that can predict long-term compatibility in a relationship

· Sam Yagan is a cofounder of OKCupid, former Match.com CEO, and former Tinder director.
· Yagan said that OkCupid data found that there were three main questions that can predict long-term compatibility between a couple.
· "You can disagree on religion, you can disagree on pets, you can disagree on lots of things," Yagan...