Former hook-up buddies Leonardo DiCaprio and Rihanna are heating up romance rumors after being spotted together in Paris on Sunday. Apparently the two got a little friendly while partying down at L'Arc nightclub.

“Leo was at the club for a private party and Rihanna came with Cara Delevingne separately,” the insider told . "Rihanna went over to Leo to say ‘hi,’ congratulate him and give him a kiss on the cheek. They chatted for a few minutes." We wonder if that's all they did?!

DiCaprio is in the City of Lights for the Paris premiere of his film The Revenant. Rihanna is in Paris to film Valerian and the City of a Thousand Planets with pal Delevingne.

According to the source, the hunky actor and the “Diamonds” singer are “just really good friends. They left the club separately.”

Good friends, who have been to the bone zone together!

The two have been linked to each other several times. Last January, onlookers caught the duo swapping spit at the Playboy Mansion. On Feb. 20, 2015, Riri and Leo were reportedly dancing very close at the singer's 27th birthday. Apparently they also spent last Valentine's day together. Maybe they will spend this Valentine's day together again?!