Do you think that bettas build like a relationship with their owners?
I do.
My second betta Fury especially did. He would follow me around the room by swimming back and forth throughout his tank. He would greet me when I can up to the tank, always gave me these cute eyes. Boy was Fury a charmer.
My 3rd betta I thought did too. He'd come up to the tank, and always like to say hi. Cute little guy he was.
I believe that bettas do build bonds with their owners. At least mine did. They always liked to come and say hello.
How about your bettas? Do yours seem to relationships with you?