Less than a month after reuniting, the couple have called it quits once again

Credit: Justin Paludipan/Splash News Online

Following a short-lived reunion, Keeping Up with the Kardashians star Khloé Kardashian and French Montana are once again officially “done,” a source confirms to PEOPLE.

The pair first began dating in the spring, keeping the romance low-key until Kardashian’s 30th birthday when Montana was glued to her side at her belated celebration at Tao Las Vegas.

Over the summer, Kardashian starred in his music video for “Don’t Panic,” and their romance was filmed in front of Khloe and Kourtney Take the Hamptons cameras.

Though the pair split in September, there were no hard feelings – Montana just “wasn’t the perfect fit for her,” a source told PEOPLE.

The friendly nature of their breakup lead to a reconciliation around his 30th birthday party in Nov. – but it didn’t last long.