The air sign Gemini is mentally oriented whereas the water element of Cancer emphasizes the emotions, so there is a marked contrast in natures. Variety, the spice of life to Gemini, can make Cancer feel unsettled. Cancer's , sentimentality and emotionalism will not evoke a deep response in Gemini who, in turn, never has time to fathom Cancer's moodiness. Gemini is also constantly busy so that Cancer sometimes will feel neglected.