Oh, those crazy kids: After breaking their engagement less than a month ago, Jesse James and Kat Von D are back on. James broke the news by tweeting a romantic photo of himself and Von D with the caption "para siempre," or "forever." He later confirmed to People the engagement ring is back on Kat's finger. "Sometimes you are only given one chance in life," he says. "It was up to me to open my eyes and see it. That girl is my chance. I will never stop fighting and striving to hold on to her. Showing her how special she is, and how much I love her." (And in other wedding news...)