That tweet was picked up by lot of people and spread around. But think about it. How would he know what she told her best friend in secret? Who was the friend? We don't know. The likelihood is that he made the whole thing up.
Somebody else heard about that rumor and said that her yearbook said that she'd had sex with 54 guys. Not true. She didn't write that in her yearbook. Nobody did. But once somebody says something on the Internet it never goes away.
It fits perfectly with the recent news reports about Christine Blasey Ford's drunken sexual escapades in the party town of Dewey Beach, Delaware.
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Not going to waste any more time on you, Mr BS.
It was in print, not a tweet (although it may well have been relayed in tweets recently).