Rob Pattinson and Kristen Stewart are having sex up to seven times a day-- and they are into some pretty wild stuff!

The "Twilight" stars are reportedly totally freaky now that they're back together, buying blindfolds, feathers and handcuffs to use in the bedroom.

One report claims that the reason for the freakiness is that Kristen is doing everything she can to "please" Rob, since he took her back- and that includes marathon sex sessions.

OUCH??

Read more HERE

-AJ