I don't hold grudges, I find them to be a waste of time and energy. That said, if you do something to piss me off seriously, I'll just stop wasting my time and energy interacting with you anymore. It's very, very rare for me to do that, but it has been known to happen. My ex-wife for instance. I hope she's doing well, that she succeeds in whatever she wants in life, but I have no desire to interact with her ever again.