The last "little" part

I have come to accept that a relationship I wanted to work out is not going to work out. I have accepted that I was devastated about it, and that in and of itself helped a lot. I have also accepted that I misjudged the situation and the person. The last part I am having trouble with surrounding this situation is the hurt and insult I still feel at the apparent assumption by the other person (who I thought extremely highly of) that I would be willing to behave in a way that strongly, strongly opposes my very deeply held values system. What can I do to release this last bit? I am comfortable with what my values are, and do not believe them to be something I wish to change about myself, if this helps with the response at all.