Youtube Thumbnail on Facebook Post Not Displayed

I’m a recent convert to WordPress but have searched extensively for the answer to my question. I’ve also found some workarounds, which I will discuss later.

Anyway, when publishing a post that contains a YouTube video (inserted into the post using the YouTube embed code), and nothing else (no text/images), from WordPress to Facebook using the “publicize” feature, the YouTube thumbnail does not show. I would like to show the video thumbnail in my Facebook post. How can I do this?

My website is ninjasensei.com

My workaround was to take a screenshot of the video thumbnail and set it as the featured image. It then showed in my Facebook post but when I navigated to my page it displayed next to my video disrupting the formatting. I deleted the featured image. It still shows on the Facebook post and not on my blog post, which is what I want. I know there is a modification I can do to the single.php page to remove the featured image from the post but I do not have the code that others have referenced.