What's more? Riley apparently has that innocent appeal Alex is so damn attracted to:

"She's just sweet like a little girl or kitten…kind of untouched by the world," spilled one of our sources who knows the couple.

So it's no surprise Pettyfer wanted to be "all over" Riley when he first met the stunning celeb offspring. In fact, even our Pettyfer-Keough insider admitted Magic Mike director Steven Soderbergh has said Riley "got the best from everybody in her lineage."

So, Riley, you clearly have a bright future with that beautiful mug of potential, but do you really know what you're getting into by marrying your sexy stripper BF?

Then again, considering the Presley family (Riley's mother is Lisa Marie Presley, her grandmother is Elvis's ex-wife, Priscilla) has a long history with Scientology, perhaps we should be worried about Alex instead—our source confirmed he's been spending a lot of time in Florida near the Scientology center.

So maybe we should be asking Alex if he knows what he's getting into? Tread carefully, you both.

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