It’s the most romantic week of the year, with Valentine’s Day this weekend. So, let’s show some love to the iconic brands who used PR to win great headlines. It’s a week that’ll go down in history as the one when Weetabix broke the internet. There were also fantastic campaigns from Marmite, who spiced things up with a new flavour, and the BBC, who caught our attention with a powerful poster initiative. It really wasn’t a good week for Star Wars actress Gina Carano, who was axed after a badly misjudged social post…