Kendall Jenner also showed some love for her sibling on her social media page earlier today.
The model wrote, "I love you, I love you, I love you @robkardashian."
The sweet message came just hours after he went on a Twitter rant dispelling rumors that he's been to fat camp and rehab.
"So i found out i was trending for being fat...thank you all it really made my day," the 27-year-old began by saying this morning.
"To the blogs saying i went to fat camp or rehab LOL then why am i still fat u fools?? y'all must have run out of real news."
He continued, "First, i don't believe in rehab or therapy or anything of that sort and second I'm a grown man and will work on myself when i choose. I'm aware that I'm fat that def aint a surprise to me lol and my only therapy will be in the gym anyways had to say somethingggggggggg."
Khloé rushed to her brother's defense by writing, "love you @robkardashian. Some of you people are disgusting for calling others names and picking on them."
She added, "You should be ashamed of your self. Your words are cutting deeper then you know and are possible leaving lifetime scars! What shallow souls some of you are. Its sickening to critique anyone off of their appearance. Grow up!"
Rob tweeted back, "and i love you @khloekardashian ..................but i don't want to love somebody else."
Keeping Up With The Kardashians returns June 8 at 9 p.m., only on E!