By Andrew McCarty While the football world is still waiting for Rob Gronkowski to make an official decision on his football future, he’s been busy doing other things. Gronk has been enjoying himself this offseason and that certainly won’t stop today. The free agent tight end is celebrating his 33rd birthday today. Plenty of fans have reached out to wish Gronk a happy birthday. So, too, has his longtime teammate Tom Brady, who tagged Gronk in his latest Instagram story to ask him one question. “Happy Birthday buddy,” he said. “Getting bored yet?” Later this afternoon, Gronk’s longtime girlfrien…