Reunited and it feels so good!
Khloé responded to Rob's happy tweet with a heart emoji. The sentiment is definitely a change of heart considering his latest post on Twitter.
He wrote on Monday, "No one will ever understand how much it hurts," before deleting it several hours later.
While he didn't confirm what he was referring to, it could very well have been an April Fools' joke.
And speaking of, he also posted a message on Instagram (which was later deleted as well) that read, "April Fools prank: replace all the sugar in your house with cocaine."
In addition, he did a bit of spring cleaning and removed several photos from both his Instagram and Twitter pages.
His hot and cold social media presence comes on the heels of his 27th birthday, which was on March 17.
In honor of his special day, Khloé posted a cute collage of him with all of his sisters.
She wrote in the caption: "Happy birthday @robkardashian I would be lost without you!! Thank you for being the best brother anyone could ask for. This year I want to give you the ability to see yourself through my eyes! I want you to own how incredible you are and shine the way you are meant to shine. I love you!!!!"