I'm hanging out at the computer desk where my bettas are, and I'm watching Jade and Mushu flirt through their tank walls. They're both wiggling like crazy, and Jade will pause to put her head down in the 45 degree angle. Plus, she has some serious vertical barring going on!
And Mushu has a fairly impressive bubblenest going on lol
I tried getting a video of the courtship displays, but when I stood up with the camera, they were more focused on dancing for me, than each other.