I have negative feelings for someone
Why do you think that you are feeling so negative?
They're not what they claim to be
Feeling a sense of injustice when you think someone is lying to you is normal, but being resentful about it only hurts you. Find out why your friend has been lying and tell them your issue with it.
I won't tell them that because I can't trust people anymore, who knows if they will catch me again and I have a grudge against that person so I won't go and say sorry and I won't trust that person.
I think that you should just try to let it go. It does not do any good for either of you to hold that much resentment in your heart.