Symbolism: 
A mango represents sexual desires, erotic fantasies, sweetness, new beginnings, new relationships and sourness in the present relationships. 

If you dream of eating a sweet and tasty mango, it means that your relationship with your partner is going to improve, if it is going through some sort of crisis, at present.

However, if your relationship is already good and you dream of feasting upon a nice and yummy mango, it means that your bond with your partner is going to strengthen.