The male is showing submission to the female. Even if she looks at him and doesnt approach he will do this. If he approaches her and does it, that too is also common, as if to say I am approaching you but I am submissive. He maybe wanting to pair with her, but he may also be just stating that he doesnt want a beat down either. Her turning away could be not interested or good thing you shook like that or I was gonna smack you around, but its cool now. Its a tough call with anemone fish behavior but the good news is that one of them is submissive, so your worse case scenario is they will co-exist. Your best case scenario is they will become a mated pair. GL.