OP is shit stirring, Harry talks of Chelsy with great affection, saying he understands why she could not deal with the royal life. He calls her "Chels", says she is fun, uncomplicated, and has warm things to say about her.
āI loved Chelsā ease, that she wasnāt complicated,ā he said, according to Page Six. āShe didnāt care what anyone thought. She wore miniskirts and high-heeled boots, danced however she wanted, drank tequila like me, and all of this made me really happy. I couldnāt help what my grandmother thought about it. Or the people. And the last thing I wanted was for Chels to change to please them.ā
How Meghan comes into it, the OP has not explained, but as Chelsy came to their wedding, and was Harry's longest relationship, longer even that Meghan's marriage to her first husband Trevor, I would say her existence is no surprise to Meghan.