If there's one thing that might get my dad, a retired math teacher, to visit Toronto and have a real conversation with me for the first time in seventeen years, it's a big nerdy Pi Day party. And hopefully this party-and seeing the tech company I built from nothing-will finally be enough to impress him and make him forgive me for everything I did when I was a teenager. But it's got to be a really great party. That's where Sarah Winters comes in. She owns Happy As Pie, a sweet and savory pie shop, and wants to get into catering. She makes an amazing lamb-rosemary pie, cherry pie, lemon-lime tart…you get the idea. She'll provide the food and help me plan the party, nothing more. No matter how much time we spend together, I'm not going to fall in love with her. At least, that's what I tell myself…