Khloe Kardashian Shows Rob Kardashian Love On Instagram & It's Bittersweet — PHOTO

If you've been a fan of Keeping Up With the Kardashians since the beginning, then you know just how tight Khloé Kardashian and Rob Kardashian are. That can still be said today, despite all of the ups and downs the two have endured. On Tuesday, Khloé shared a touching photo of Rob on Instagram proving that she will forever have her younger brother's back. Alongside the throwback photo of the siblings, Khloé wrote, "If only you could see yourself through my eyes! I'll forever be obsessed with you! My one and only! #MyAce."

It's no secret that as of late Rob has stayed out of the spotlight and has nothing to do with KUWTK. He prefers to stay behind closed doors, which the E! reality series has discussed on more than one occasion. For example, over Thanksgiving, Rob was MIA from that famous family photo, but as Kris Jenner told Maria Menounos, Rob was around, but he also went to a friend's house and wasn't photographed. As for how Rob is doing, Jenner added, "He's doing alright. You know, he's doing his best. He's not as into being on camera as much as the rest of us. But he's working on himself. He's going to be OK."

Back to Khloé's sweet picture, it's clear that no matter all of their hard times, Khloé hasn't forgotten about her brother and will continue to support him. There's no doubt the Kardashian-Jenner family are thick as thieves, which they show time and time again, especially through social media.

I mean, on Monday both Kourtney Kardashian and Kim Kardashian celebrated Mason and Reign Disick's birthdays on social media with some super cute photos. They just love Twitter and Instagram, but who can fault them for that when they post messages like Khloé's one to Rob?