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.
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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.