Travis Barker has made his relationship with Kourtney Kardashian Instagram official. He posted a sweet photo of the two kissing with a caption I F-ING LOVE YOU... You're a blessing to this world... Happy Birthday Kourtney". There has been speculation that the two were an item after they were seen in stories together, and on vacation with each others kids. But there was no confirmation until now! What do you think of his birthday post to Kourtney Kardashian?