Scott Disick and Kourtney Kardashian may be on amicable terms soon after their split – co-parenting their 3 little ones and even vacationing with each other – but it really is Disick's friendship with his ex's sister Khloé Kardashian which is the genuine "romantic relationship goals." The longtime pals took to social media on Tuesday to declare their admiration for one particular one more in a sweet selfie posted to the two of their Instagram accounts. "The Lord and the Lady," Khloé, 32, captioned her publish. Disick was with the Kardashians in San Diego at the 82nd birthday celebration of their grandmother Mary Jo (a.k.a. MJ) in which he hung with Khloé, Kourtney, Kim Kardashian West. Rob and his fiancée Black Chyna. amid others. The festivities have been featured in a variety of Snapchat videos from the family. The Kardashian girls even got together for a group photo from the household dinner, which Khloé posted on her Instagram account. "Our best blue steel," she wrote.