Remember being a teenager and experiencing your first love? The heady waves of emotion, the cruel pangs of longing? Brooklyn Beckham appears to be all about that right now.The 17-year-old son of Victoria and David Beckham posted a lovesick tribute to girlfriend Chloë Grace Moretz . It seems the two haven't been getting much quality time together lately, and Becks Jr. is bummed out.Here's the sweet photo he shared of his actress love yesterday.