Upright
The one who arrives with the grand gesture. The Knight of Cups moves on feeling: a proposal, an invitation, an offer made sincerely and beautifully. It's lovely, and it's still worth checking there's something behind it.
Reversed
Reversed, there's charm without much substance, or a heart chasing a story it wrote in advance and is now trying to cast.
If this is your card this month
What are you pursuing because of how it feels rather than what it is?
A card is a prompt rather than a forecast. It doesn't know what will happen, and the useful part is what you do with the question it hands you. We make that case at more length in not a prediction, a mirror.