Welcome to “The Greatest Advice Column” from The Greatest Generation. To submit your own questions to Marty please email Marty@shenanigang.com Dear Marty,How many dates does it take to be officially dating someone? To be totally honest, I get this question a bunch. Haven’t answered it yet because, frankly, I never had a good answer. But I figured it out. You’re officially dating on whichever date the girl …