The pair previously dated from 2013 to 2014.
The Oscar winner offers financial support to storm victims in Texas, Louisiana and the affected areas.
See how A-listers are living it up during the dog days of summer.
ET was on the red carpet ahead of Saturday night's brutal face-off, chatting with celeb fans including Aisha Tyler, Bruce Willis and Jamie Foxx.
Jack and Rose forever!
The A-list pals kicked back near the beach on Sunday.
The 42-year-old actor is rocking long locks and a lot of scruff these days.
The gorgeous couple is in St. Tropez for Leonardo DiCaprio's Foundation gala.
Madonna Gives Surprise Performance at Leonardo DiCaprio's Star-Studded Charity Auction: 'This Man Is a Boss!'
Nearly 20 years after the film's original release date, the stars reunited at DiCaprio's annual charity fundraiser.
The trio snapped a pic at The Leonardo DiCaprio Foundation's annual fundraising dinner on Wednesday.
Titanic fans may want to get out their checkbooks.
A source tells ET that the 42-year-old actor is wearing the medical device for a "routine checkup."
It's been nearly 20 years since 'Titanic' hit theaters. Now the Oscar winner is starring in another disaster movie and that has Winslet looking back on her days with Leonardo DiCaprio.
