For future readers...
Every one of his pictures are easily found online (of a Brazilian model/maybe porn actor). When I mentioned I loved all his pics online and asked if he was willing to confirm, he stopped responding to all text messages.
The grammar and colloquial use of American slang in his text responses also suggested a native speaker, even though the model in the picture is not one. The "huge comment" by the "admin" seems to go to great lengths to explain differences in the real person's looks vs. the pictures.
Add that all together, in my opinion, strong pass. Even with (in part, because of) rentboy.pro's "Approved by meeting" recommendation.