https://www.youtube.com/watch?v=0RmztHbYBOw This is the full film posted to the same channel (Queer Questv), but it is designated for "Members Only". You can see that the runtime matches the 25min length listed on the page. Unfortunately, I have not been able to find the full film anywhere else.
The linked video (18min) is not the full movie (25 min). This channel, Queer Questv, posts abridged versions of complete original videos with the label "[Highlight]," as I see this is. This can be a bit of a tease for these more under-the-radar short or independent films. Posts of complete works on this channel contain the label "Full" in the post title.
This is the full film posted to the same channel (Queer Questv), but it is designated for "Members Only". You can see that the runtime matches the 25min length listed on the page. Unfortunately, I have not been able to find the full film anywhere else.