From Cameron Diaz to Scarlett Johansson to Jessica Biel and now....back to Scarlett! Justin Timberlake's been playing the field more than any footballer since his split with the former Charlie's Angels hag. And, Mister JT seems to be enjoying his non-committal player phase quite immensely. This past weekend, the SexyBack singer reignited the flame with Johansson in Miami, where both were in town for the Super Bowl. "They spent the whole weekend together," an insider tells In Touch Weekly. The pair met up at Timberlake's bungalow in the Delano hotel at around 3:00 a.m. on February 4, a witness tells In Touch. Later that night, Justin and Scarlett were spotted at this exclusive after-party. "They were dancing and whispering in each other's ears," an onlooker says. "They were having a really good time together." At 3:30 a.m. on February 5, the pair snuck out the back door holding hands and headed back to the Delano for the night. Biel is gonna be pissed!!!