Hosting a dinner party is infinitely more enjoyable with a partner in crime to help curate the playlist and the guest list, keep the conversation and the drinks flowing, and take a load off the planning. Who better than a dear friend to serve as your cohost and cleanup accomplice as the night winds down? That's the spirit behind Table Mates, where we’ve invited a stellar group of creatives to plan and execute their dream soirées...and let us in on how they do it! Artists Sophie Lou Jacobsen and Megumi Shauna Arai are no strangers to culinary collaboration. Their standing Saturday date at the Union Square Greenmarket lends itself to fresh experimentation. “We walk around with our coffee and download about our past week while buying what looks especially scrumptious to plan meals for the following week, including dinner parties ,” says Arai.…