Rob Kardashian
Television personality Rob Kardashian has been staying away from the spotlight in recent years due to weight gain and has reportedly been diagnosed with diabetes. Here, he arrives at the opening of the Kardashian Khaos store at the Mirage Hotel and Casino in Las Vegas, Nevada December 15, 2011. Reuters/Steve Marcus/Las Vegas

While Rob Kardashian has been laying low for months now, a new report claims that the younger brother of Kim Kardashian is making an effort to make his presence known to his ex girlfriend Rita Ora. Rob is said to be drunk-calling the singer and asking her for another chance, because she remains the love of his life.

OK magazine reports that even though Rob Kardashian and Rita Ora broke up more than two years ago, the sock entrepreneur and reality star is yet to move on. His current weight-gain issues are also said to be a product of this split. According to the magazine's source, Rob is still in a very unstable place right now, where he's all bitter and angry. The source explained that Rob thinks everything went downhill for him when he learned that Rita Ora was cheating on him.

However, even though he's angry with Rita, he's also equally determined to get her back, particularly when he's drunk. The source explained that because Rita was the love the of his life and at one point, was planning to marry her already, Rob can be especially vulnerable to feelings of nostalgia when he had a few drinks. Once he's a bit drunk, he would start calling her and begging her to give him another chance, the source shared. In addition, Rob is reportedly mooning for her when he's sober, looking at her pictures online and spending hours listening to her music. "He wants her back and he can't bring himself to believe she has no feelings for him," the source revealed.

Theirs was a messy breakup, with Rob criticizing Rita on Twitter and then later deleting the offensive tweets. "She cheated on me with nearly 20 dudes while we were together, I wonder how many she will sleep with now that we apart? [sic] But I mean 20?!!!" the tweet read, but later on deleted.

Meanwhile, sisters Kim Kardashian and Khloe Kardashian are so frustrated that Rob is not making his presence known and staying out of the limelight for quite some time now that they took over his phone once and used it to tweet and post selfies, even check out his private messages. After a series of selfies and tweets, Kim claimed she believes all her posts would sooner or later be deleted by her brother, jokingly calling him a "tweeter and a deleter."