Kim Kardashian and Odell Beckham Jr. Split: 'It Fizzled Out' (Source)

Kim Kardashian and Odell Beckham Jr. are going their separate ways.

"It’s over and just fizzled out," a source tells PEOPLE of the pair, who were first linked in September 2023.

The split comes after the SKIMS founder, 43, and the Baltimore Ravens wide receiver, 31, were spotted exiting the 2024 Vanity Fair Oscar Party together in March. At the time, a source told PEOPLE that they were “hanging out pretty much all night once he got there."

"There wasn't a ton of PDA like some of the other couples, but there was a lot of touching, and they were right near each other the entire time,” the insider added. “They were careful about not being too all over each other, but there was lots of chemistry, and they left together.”

Prior to Oscars weekend, the two were seen together at Michael Rubin's Fanatics Super Bowl party at The Cosmopolitan with friends in February.

The same month, another source told PEOPLE the pair weren’t rushing to make things official, noting they were “still hanging out, but it’s pretty casual.”

“Neither of them are in any big hurry to jump into something serious,” the insider added at the time.

Kardashian and Beckham Jr. were first linked in September 2023 when a source confirmed to PEOPLE that the pair had made a connection and were "hanging out."

Two months later The Kardashians star made an appearance at Beckham Jr.’s '90s-themed birthday celebration at WSA in New York. For the NFL pro’s big night, Kardashian stepped out in a gothic-inspired black leather dress.

“It was a very fun party with a lot of fun people,” a source told PEOPLE of the event, which was also attended by La La Anthony, Lori Harvey, James Harden, Saquon Barkley, Michael Rubin, Ashley Graham, Emily Ratajkowski, Winnie Harlow, Lil Baby, Emma Chamberlain Luka Sabbat and PJ Tucker.

Never miss a story — sign up for PEOPLE's free daily newsletter to stay up-to-date on the best of what PEOPLE has to offer, from juicy celebrity news to compelling human interest stories.

Prior to Kardashian, the NFL pro was in a relationship with his girlfriend Lauren Wood and the pair welcomed son Zydn in 2002.

As for Kardashian, she was married to Kanye West from 2014 to 2021 and shares daughters North, 10, and Chicago, 6, and sons Psalm, 4, and Saint, 8. She also dated Pete Davidson for nine months in 2022 before they went their separate ways.