After Mary-Kate Olsen spent some time with ex Sean Avery in May, her friends are warning her to ‘tread carefully,’ a source exclusively tells Life & Style.

It may be spring, bordering on summer, but Mary-Kate Olsen doesn’t seem to mind. The creative director of The Row seemingly rekindled her relationship with Canadian hockey player Sean Avery over dinner in Los Angeles. But, given her heavy layering, we wouldn’t blame you for assuming she was dressed for a Canadian winter.

The Olsen family is definitely one of the most private families in Hollywood, and for good reason, considering Mary-Kate Olsen and Ashley Olsen were publicized nonstop in their formative years. As adults,

The sighting comes three and a half years after the actress-turned-fashion designer finalized her divorce from French banker Olivier Sarkozy.

Mary-Kate Olsen and Sean Avery sparked romance rumors after they were spotted in the Hamptons together over Memorial Day weekend; a source tells Us Weekly what's really going on

Mary-Kate Olsen and former NHL player Sean Avery were spotted getting cozy in New York's Hamptons, nearly 20 years after they were initially linked, back in 2007. See the photos!

Since then, sources told People that, despite persistent rumors, the pair are seemingly just close pals. They said, “Mary Kate and Sean have known one another for years. They have been in the same social circles in NYC and share many mutual friends. They spend their summers in the Hamptons, and hang out with the same crowds.”

Mary-Kate Olsen reunited with former flame Sean Avery in the Hamptons during Memorial Day weekend. See photos of their outing.