In my opinion, Harry is imitating his mother who was dating a brown Dodi Fayed when she died. Rumours they were to be married.
Harry, resentful of dad’s infidelity, is rebellious and married brown like her mom. Meghan sniffed that out and went with it.
Least that’s my take
I’m not sure, but the now thrice married Markle has a serious history of manipulation and alienation long before Harry.
His father didn’t just have a one night stand, but a long term mistress and then physically moved her in. That is probably the most self centered act and destructive on so many levels for those boys.