I have had a TON of experience relating to this. I will admit I do tend to hold grudges despite the fact the life is too short I know and will really only trust someone once and if they blow it thats that. I have been screwed with quite a bit in life, so I learned not to trust someone who screws me because it happened so much that they would regain my trust then screw me again, it was a cycle that did nothing but cause alot of hardach for me and I have learned to not let it happen. I have held grudges for many years towards people and over time that will fade. I am willing to chat with people I have not seen since high school even tho they messed with me and made fun of me, only because its years later and I dont hold a grudge my whole life towards anybody for the most part.
I think my problem is (I will try not to speak for other HFA/AS people) that I have such a hard time reading people and knowing what makes them tick, their motivations. I have had many positive and negative experiences with people and so I have learned that after a while what to expect from people. Now if its someone I dont know well and they screw me over, then thats it probably for life, I have no desire to hang out anylonger and be friends. Other times it can be someone I have known for a while, years even, and one day we have a fight or trust is lost. Now I become less trustworthy and more cold towards them as a defence mechanism, I will open up to them if its been a while since the incident and they work to re-establish trust and friendship so overtime I become less cold, but whenever this happens as far as I am concerned it is up to them to re-establish trust and friendship. If they screwed up and we had a nasty fight then if they dont work to show me they are trustowrthy, or I really value their friendship like a best friend, or they talk to me and are nice for a while, if that does not happen the friendship is dead in my eyes and I will be cold to them forever, never forgetting, never allowing them back in because at that point its too akward and pointless to carry on with someone who could potentally hurt me again or cause me to work for a friendship that I may preceive is fake anyways, I have learned to just look away and go on with life without them.
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DX'ed with HFA as a child. However this was in 1987 and I am certain had I been DX'ed a few years later I would have been DX'ed with AS instead.