This is only my third week of betta ownership so excuse the excessive squeeeeing...
Loki has been very interested in my movements all day. Today at feeding time I hovered my (clean) finger just a hair above the surface and he poked his head up and nipped or bumped me or something. (It didn't hurt, it was just adorable).
Then I slowly moved my finger back and forth and he swam under it, following me.
I am sure this is because he knew he was getting fed, but I am happy to pretend it's because he loves me.