Can liquid water exist on a planet without atmosphere?

One way, I think, is if the gravity is exactly correct. However, while I think the water might be in a unstable equilibrium, I have been unable to work out the mathematics. Let's assume that such a planet exist, will tides/ high waves result in spontaneous boiling of water; meaning that the water will soon or later disappear in space?

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Can liquid water exist on a planet without atmosphere?

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