Everyone has either been told, told someone else, or experienced the, "don't you think they have changed?" scenario. I find it absolutely ridiculous. I also hate that it's always thrown at people like daggers, an insult because you aren't the exact same person you used to be.
You've changed is petty and a simple insult to someone because they don't like your actions or words. If anyone ever stays the same person from the day they learn to speak to the day they die, you're doing something wrong. Growing and learning from experiences, good and bad is a part of life. It's called growing up, you wouldn't do and say the same things you did as a freshman in high school once you graduated from college, would you? Absolutely not.
Beau Taplin says, "You’ve changed is an insult often intended to discourage you. Ignore it. This is your growth. Adapting and refining yourself are all necessary parts of the process. So long as you continue to endeavor to be kind and compassionate you have nothing to be ashamed of.”
Take "you've changed" with a grain of salt. It's hard to consistently stay on the same path as people. As soon as your priorities change, your hobbies, your thoughts on a certain topic are different, all hell will break loose, because you definitely are not the same person you use to be. Or so they say.
Growth is nothing to be ashamed of.