你是我的男神你是我的女神
[nĭ shì wŏ de nán shén nĭ shì wŏ de nǚ shén]
This nickname shows deep admiration or fondness towards someone who can either be a boy/guy or girl/woman, it translates directly into “You're my male god/ideal man and you're also my female goddess/idol.” which essentially emphasizes how the addressed is highly idolized in many ways.