Scott Disick’s 18-year-old travel companion

Scott Disick’s 18-year-old travel companion says she’s NOT sleeping with or dating him … at least that’s the story she’s telling her friends.

Lindsay Vrckovnik insists she’s never hooked up with Scott. She says she’s been traveling with a group of models and met Scott in NYC, and hung out for a day. The girls wanted to move the party to Miami over the weekend, and according to what she’s telling friends … Scott happily followed.

Scott Disick’s 18-year-old travel companion

Lindsay — who’s from Canada — has a boyfriend there and the photos that surfaced have caused a problem between the two of them.

Whatever Lindsay claims … she’s having trouble convincing her BF for a few reasons. First, she and Scott didn’t meet for the first time last week … they hung out at least once before, in July, at a party in Malibu.

The second problem Lindsay has … explaining the pics where she’s all nuzzly with Disick. She says the pics are “misleading.”