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Call them Twit-le dee and tweet-le dumb.
The couple, who was in the same house, began their conversation by snapping photos of message scrawled on their hands and posting them on their respective Twitter pages.
The pair exchanged missives about dinner plans ("Fried rice. Lo Mein? No msg promise") but it quickly dissolved into pillow talk.
"Race you to the bedroom," Demi's hand read in a picture she posted on Twitter.
"4 Sure," Ashton tweeted back.