By Jamie Roberts Taylor Swift was spotted partying without her boyfriend Travis Kelce, but she appeared to be staying on her “best behaviour,” according to a body language expert. The Shake It Off singer stunned revellers as she made a low-key appearance to celebrate a pal’s birthday at a dive bar on Thursday. But while her NFL star partner was nowhere to be seen, the songstress was said to be showing of some very “Kelce-friendly” body language. Body language expert Judi James analysed the images and footage the Mirror obtained and said Taylor was clearly spending her night out with friends lo…