Is there a word that conveys 'keeping someone wondering purposely'?

Scenario: Someone publicly says, "We have made a decision" in reference to an important choice, but no matter how many people ask what the decision was, the person does not say. Later, when asked about why they refused to disclose what their decision was they reply with "Because I don't want everyone to know."

Question: Is there a word that conveys 'keeping someone wondering purposely' or describes a type of person who does?

Note: I am aware that a**hole fits nicely as an answer, but I'm looking for something a tad classier.

Solution 1:

You could try tantalize, with some care.1

Solution 2:

You could say that he is leaving you hanging. The idiom leave hanging can mean

to keep someone waiting for a decision or answer

As the cite notes, you also could say twisting in the wind.