Read this order
Lily → Heart: Intimacy or harmony given emotional warmth. This can describe a loving physical bond or a peaceful, affectionate relationship.
What changes in reverse?
Heart → Lily: Affection with tenderness, maturity or sensual intimacy. The relationship question helps distinguish calm companionship from physical closeness.
Heart → Lily ↗A practical example
A couple choosing a calmer, more tender way to relate can fit either order. Heart first introduces affection; Lily first introduces calm, maturity or intimacy. Read physical closeness only when it fits the question.
Check it against your question
Keep the actual order and ask which part of the example fits your situation. An example illustrates a possible reading; it does not establish facts or promise an outcome.
The meanings behind the pair
Lily: Lily represents peace, maturity, experience and, in some traditions, sensuality or sexual intimacy. The question and neighboring cards distinguish a calm setting from an intimate one.
Heart: Heart is love, affection, enjoyment and emotional attachment. It shows what carries emotional value in the question.
These examples show possible ways to read the pair. Your question and the other cards may change the meaning.