For one thing, he has aged. He began escorting in 2009 at the age of 28 and many of the photos he used before his hiatus were from that period. The beard adds years as does the grainy quality of the pictures. If you look closely at his face, you will see very few lines around his eyes. What strikes me about his face are the lines along his cheekbones.
If you look at the pictures that accompany this article, you will notice that in the first couple of photos his cheekbones are noticeable. In the studio photos further down in the article his cheekbones are photoshopped away. The cover photo of his book foreshadows his current look. You can see the lines forming that are now rather prominent, again because he has aged.
It would also help if he smiled.