illusions

They say when a person close to you does something wrong, even though not against you, you still feel betrayed... That's exactly the case of what happened to me.
I caught a friend of mine lying, not to me ( though I've found tons of loopholes to his alibi) but to this friend's parents. It was about a trip with an intimate someone.
there is one thing that's stuck with me since 6th grade, lying is the worst sin to commit. Well, I was again being me (whatever that means), I got angry and disgusted. My total perception of this person changed, and the more I analyzed the info that I have, the more I see how much this person lied.
when I caught my friend, I immediately reacted harshly, I really did not want to talk to this person. The days went on and unfortunately, I am doomed to see this person everyday. My unspoken disgust for what this person did turned into a severe irritation. Seeing this person turns me into a bitch in an instant. My friend betrayed my trust, and the trust of everyone around ...
even after five days of not seeing this person, the very first moment I saw the person again shifted me into another terrible annoyance. It came to a point that I was already having migranes. Even after evading the person, I could not let go of what this person has done.
I still talk to my friend but in not so friendly terms. This friend may have missed me during the past 3 days, but for me, it was hell to short for me to get over my disgust.