You’d be surprised at how many people you come across who just can’t stand Valentine’s Day. Whether childhood experiences soured them on the holiday, or it took them a while to develop the hatred, a lot of people out there cringe when they flip their calendar to February. This July, we’ll get to see two people who really should hate it, including Nia Vardalos and John Corbett. Five dates, no more–that’s the strict rule of a Manhattan florist who believes in abandoning a relationship before …