Hating, or not liking someone for always winning when you are always losing; we can say is a result of jealousy, envy, and fact is, some people really don't know how to control themselves with issues like this.
Take a look, read the story in the shot I share below, and tell what you will do if you find yourself in a similar situation.

- will you (for the sake of peace, maybe to hide your envy, jealousy) continue to go gambling with that friend? And continue to lose your money?
- or will you tell him point clear that you are no longer interested in going to gamble with him? How are you gonna do it so he doesnt suspect that you are not happy with his constant winnings, when you are constantly losing?