The speaker describes someone who is a mix of opposites, and the central image is ice in summer. On the surface this person is warm, even burning, and their touch keeps the speaker warm too. Underneath, the heart is cold, alone and frozen, and the poem says it is "cracking like ice," which suggests it is fragile and might break.
The speaker then sorts through comparisons. This person is like fresh waves on hot sand: refreshing, but not new. They are not like melting ice cream, which the speaker finds annoying. Instead they are plain, everyday ice, common and regular but still different from everything else around in the heat.
The mood is tender but uncertain. The speaker clearly needed and wanted this person, yet the poem ends on a question mark: ice "disappears easily, but still loved?" That leaves a feeling of longing, as if the speaker is unsure whether something so easily lost can still be held onto.