Single page won't load as https

So for some reason, one page in my website refuses to load as https instead of http. If you navigate directly to it like with this link, it loads it as https. However, if you navigate to another page on the site and then back to the “about” page, it’s no longer https. Every other page loads under https, so I’m baffled as to why this one doesn’t. Anyone have any ideas?

Need to edit the configuration of the script you are using or else make use of .htaccess if you don’t have a config file.