have you ever wondered why izzit that towards some people, you can irritated (or hurt) easily by the person's words?
it's not because of the person's face, or character or personality...it's because of unresolved former feelings towards that person. it could have come as a presumption towards the person, or because you have unresolved anger or hurt from interacting with this particular person.
so next time u feel such feelings towards a person, resolve to think through why u feel tt way and resolve the issue as soon as possible..for hiding it will merely cause the feelings to re-emerge in the future, even in the slightest issues.