Kim Kardashian had an awkward run-in with her ex-boyfriend Reggie Bush and his fiancé Lilit Avagyan. A source told US Weekly that the "Keeping Up With the Kardashians" star was in West Hollywood on Mar. 17 doing some shopping for baby North at Bel Bambini but made a pit-stop at a little deli called Ed's Coffee Shop.

As soon as she entered, Kardashian noticed Bush and Avagyan enjoying some breakfast. Witnesses described the run-in as "uncomfortable."

"Kim ordered her omelette, then went to Bel Bambini," the source said.

Apparently, the two never spoke to each other. Kardashian, 33, famously dated Bush, 29 on-and-off for two years before splitting for good in 2010. It was rumored that the two broke up because she was cheating on the athlete with her now-fiancé Kanye West.

According to US, Kardashian and Bush reconnected in 2012 shortly after she ended her 72-day marriage to Kris Humphries.

"Reggie and Kim have been talking since she split with Kris," a source told the magazine at the time.

Reportedly Bush and the reality star were spotted having brunch with friends at the Beverly Hills Hotel a few years ago. Since then both have moved on. Kardashian is now engaged to West and gave birth to their first child, North West, in June.

Bush and Avagyan are also engaged and welcomed their first child, a daughter named Briseis, in May. Both couples plan to tie-the-knot this summer. While Kardashian's wedding will air as a two-part E! special, Bush told Life & Style that he and Avagyan want to keep their ceremony private and would never broadcast it on TV for the world to see.

As far as his relationship with the Armenian dancer, Bush told the magazine that  "When I met [Lilit], that's when I knew [it was time to settle down]."