After looking all hot for his new video, John Mayer headed to a photo studio in LA yesterday wearing his sporty leather jacket. Looks like he left Minka at home and only brought his first love with him — his guitar. Speaking of John's love life, it sounds like his ex Jessica Simpson may not be entirely over him just yet. Even though she can't keep her hands off Tony Romo, supposedly she was quick to call Eva Longoria a backstabber after hearing that Eva and John hung out in NYC together this weekend. Her rep is denying the rumor, but it isn't the first time we've heard about Jess getting worked up about her ex.