In the season finale of hit reality TV show Keeping Up With The Kardashians, the shocking reason behind Rob Kardashian’s absence at his sister’s wedding is finally revealed. The male Kardashian skipped out on sister Kim’s wedding to rapper Kanye West after reading rude comments about himself online.

In the episode that aired yesterday, Scott Disick broke the news that Rob wouldn’t be attending the wedding, a fact that upset Kim. However, she said that she wanted to deal with the issue after the wedding was over. Apparently, Rob had flown to Paris with the intention of attending the wedding, but he didn’t get on the flight that would take him to Florence, where the actual wedding took place. Instead, Rob took a flight all the way back to Los Angeles because he supposedly felt self-conscious about his weight gain and didn’t want to face all the wedding guests.

“When Rob flew to Paris, he read some nasty comments about himself and he just didn’t feel comfortable. He didn’t want to see all my guests. It makes me so sad for him. It’s heartbreaking. It really is. I don’t want to think about it. I don’t want to talk about it,” said Kim in the episode.

Rob has supposedly been battling depression over the past year, and his family is rallying around him to support him through it, including his brother-in-law Kanye West. “Even [Kanye West] has been reaching out to him more and showing he cares. They are all his biggest cheerleaders right now,” a source told E! Online.

Rob Kardashian sets 50-pound #weightloss goal: Is dieting and working out with Khloe #KUWTK http://t.co/GJopALij3U pic.twitter.com/s9v3qOMPnp

— TheImproper Magazine (@TheImproperMag) August 29, 2014

Another source told E! News that Rob was on a mission to lose 50 lbs., attributing Rob’s recent weight gain to depression. However, since missing out on Kim’s wedding in May, Rob has been keeping away from the spotlight and focusing on getting healthy. The source revealed that Rob has been attending therapy sessions, working out and adopting a healthier diet. He is also supposedly now living with sister Khloe, who has been very supportive of him throughout the years.