Donald Trump opted not to answer what he described as the “toughest question” he was asked during a recent interview. The question was about his wife, first lady Melania Trump.

While speaking to the press aboard Air Force One on Monday (February 16), the 79-year-old president jokingly attempted to end the conversation after getting asked something about his wife, who was on the plane with him at the time.

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The two-part question had to do with the couple’s Valentine’s Day plans. Did they do anything special, and did he buy Melania, 55, flowers for the special holiday.

“I better not tell you that,” Donald said with a laugh, before trying to say goodbye. “That’s the toughest question.”

The Republican did describe his wife as a “movie star,” referencing her critically panned, self-titled documentary.

Continuing to praise her, he said, “I’m proud of the fact, you know, her movie is so successful. It’s a tremendous hit, and she does a good job. She does very consequential work.”

“I think you’re going to see in the end that she’s going to go down as one of the truly great first ladies. When you see what she’s doing with Russia, Ukraine and so many other things she’s doing… She’s done a good job. She works very hard,” Donald said.

Melania recently issued a rare political statement. Meanwhile, her husband revealed the thing that she begs him not to do because it’s “so unpresidential.”