Come on, man! Watch the video. This is a subsequent time he refers to himself as Joe Biden’s husband ... and he’s totally unaware of it.
This is from the DNC convention when he greets Jill after her speech. It’s about 20 seconds long.
https://www.youtube.com/watch?v=S9GRy3auD6U&feature=youtu.be
Sorry. Not buying it. I think the man is definitely suffering from dementia, but I don’t think he’s far enough gone that he thinks he’s Joe Biden’s husband. Feel free to think what you want, as will I.