Grapefruit (I have sweety) is cleaned from the skin and films. Sweetie is a citrus variety derived from a traditional hybrid of pomelo and white grapefruit. If it is not sold in your city, grapefruit or pomelo will do.
Mango and cheese cut into cubes.
Combine everything in a salad bowl. I don't make this salad. The fruit is very juicy. But if desired, you can drop a few drops of wine vinegar, I know that there are gourmets who even sprinkle black pepper.
It all depends on your taste preferences.