Let's split up the information in the error message and have a look.
This tells you what is failing, i.e. the include function
Warning: include(/home/public_html/the-dating-place.tk/languages/default/default.php) [function.include]:
This tells you why
failed to open stream: No such file or directory
...as far as the PHP interpreter can tell. It could be that there is such a file/directory, but that it isn't visible to PHP due to file ownership/access rights.
This tells you where it failed
in /home/tamcarsi/public_html/the-dating-place.tk/templates/secure.php on line 2 failed to open stream: No such file or directory in /home/tamcarsi/public_html/the-dating-place.tk/templates/secure.php on line 2
Considering that you supply an absolute path beginning with
/home/public_html/
while executing code from a path beginning with
/home/tamcarsi/public_html/
I'd say that 's your problem.