A knight on a white horse moves forward slowly, holding a cup out in front of him. His helmet and heels carry small wings, and the horse is walking, not charging. A stream runs ahead of him, with hills behind.
The Knight of Cups is someone who approaches carrying feeling — you, or someone near you. They do not rush, and they put emotion into words and gestures. When this card shows up, warm offers and romantic approaches tend to be in play. Someone arrives with a carefully chosen gift, or you find the nerve to ask someone to dinner. It is a time to follow where your heart leans rather than weigh every angle.
Reversed, only the words are left. Sweet things are said and nothing follows, or someone's feelings shift with their mood — maybe someone near you, maybe you. In another direction, romance swallows everything and the practical conditions go unnoticed. In both cases, judge by what has actually been done, not by what has been promised.
One thing to check: if this offer moved you, what has this person actually done so far, as opposed to said?
Reading him as 'a prince on a white horse' turns you into the one who waits. The Knight of Cups can be the one who comes, but he can also be the one who goes. The rider in the picture is not waiting for anyone; he is carrying the cup himself.
With the Two of Cups, the offer is accepted and becomes a promise between two people. Overlapping with the Seven of Cups, romance drifts toward fantasy — the more lovely plans there are, the more it is worth checking whether anything has actually been settled.