Bill Belichick's ex-girlfriend, Linda Holliday, ran into his current one, Jordon Hudson, while the two were at a Christmas party late last year ... and TMZ Sports has learned their meetup was anything but friendly.
The intense encounter went down on Dec. 6 ... at a "Stroll Party" in Massachusetts hosted by Dreamland -- which describes itself as "Nantucket Island's Year-Round Nonprofit Film, Performing Arts & Cultural Center."
