Getty/Bravo

Now this is breaking news -- literally. During the dramatic new "Real Housewives of Orange County" Season 19 trailer ... Gretchen Rossi is coming clean about her extra rough sex life with fiancé Slade Smiley .

In a no-holds-barred confession, the reality star claims she broke her partner's penis -- even trying to recreate the moment by eagerly bending her finger down while noting ... "Like this!"

Slade didn't seem bothered by the X-rated confession ... nodding his head to confirm his manhood did, in fact, snap like a twig in the heat of the moment.

No word on if he needed medical intervention ... but by the amused grin on his face, it appears the love injury didn't keep him out of the game. Getty

Bravo released the scorching new trailer Thursday ... and it's ful

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