PS despite all my philosophical issues with this song it’s still a very fun song, just saying.

I do know that in the video and she holds her hand up for her wedding finger but that the it isn’t her finger. The normal implication is that if you liked my sex, i.e. sex with “me” you should have put s ring on my finger. But that seems to diminish the woman, that if you liked my sex all you need to do is put a ring on it and it’s yours. I think that most women would want a guy to put a ring on their finger for more than just good sex. And if the it is “her” more generally then it seems problematic to objectify the feminine as an it, especially since women don’t want to be objectified simply as sexual objects.

A ring. Watch the video - it might become clear.

Beyonce's ex boyfriend (in the song) is angry because he sees her in the club being hit on by another man. Beyonce said that she cried over him for three years after they broke up, so now he has no say in her life. If he really wanted her for himself, he should have asked her to marry him, or "put a ring on it."