REUTERS/Regis Duvignau

Cast member Robert Pattinson reacts in the News conference for the film "Good Time" in competition during the 70th Cannes Film Festival on May 2017.

Actor Robert Pattinson was spotted at the epic birthday party of Leonardo DiCaprio held over the weekend. The presence of the actor was only made more notable by the absence of his former fiancé, musician FKA twigs.

The actor joined a number of Hollywood A-listers during the party, but was notably without a date. Reports claimed that Pattinson had split with the singer last month – a relationship that lasted over three years.

Another celebrity nursing a broken heart who was spotted at the party was The Weeknd, who also recently broke up with Selena Gomez. The pair had dated since January of this year before calling it off last month.

The party was attended by the likes of Academy award-winning director Alejandro Gonzales Inarritu, Sara Foster, Erin Foster, Jessica Szohr, Adam Levine, Katy Perry, and Robin Thicke, who came with his pregnant girlfriend April Love Geary.

The celebration was held at The Highlight Room at the Dream Hollywood, and even featured some guest DJs Quentin Tarantino and Jamie Foxx.

Pattinson started dating FKA Twigs whose real name is Tahliah Barnett in September 2014. After only seven months of dating, the couple got engaged, and were inseparable for the first two years of their relationship. Unfortunately, they started growing apart in the recent months, ultimately leading to their split. It was reported that it was Pattinson who called off the engagement.

"Rob is tired of it, has called off their engagement and told friends they have split," said a source to the Sun. "With so much ­history between them, though, there are still strong feelings there. It's a difficult situation but things have become tough between them for some time and they both know they were no longer working as a couple."

Pattinson previously dated his "Twilight" co-star Kristen Stewart for four years until their breakup in 2012.