Re: did Prophet (pbuh) ever divroced?
No, he didn't divorce hafsa. Hafsa was safeguarding one of the compilations of the Quran (after the Prophet's death).
I think the idea of a divorce had come up, somewhere I read, but dunno if that's true or not. regardless, he stayed married to the ladies he committed to.
Unlike many guys these days, he knew what committment was.
She was not necessarily 6 when he married her - there are alternative theories that she was older - like past 11 or 12. There are theories that she consummated the marriage at like 15,16 or something like that. Depends on which hadith you use in your analysis. So, fact is, that the facts are up in the air.
Besides, FG, you above all people should have no problem digesting a relationship of an older man with a younger girl.