Once someone carries a grudge, what they’re doing is allowing someone they despise or don’t like, to control their emotions,. This by usually getting upset or irate. What infuriates them, is despite all their efforts, they just can’t detract themselves from reacting.
As a result, they feel defeated and scorned. Know a grudge is a one-sided emotion, that’s experienced just by that person alone, while the other doesn’t know or care.
Once someone holds a grudge, what they feel is their anger, envy or jealousy starting to boil over.