Sent to the Wrong Stark (he's been betrayed)

From the fic prompt on tumblr: Modern AU prompt request, if you're willing: Jon accidentally sends his sexts meant for Sansa to Robb (b/c the Starks recently got a new family plan and all their numbers are only one digit away from each other). Robb's not too happy learning about his sister and best friend's relationship via dick pic.

Jon sends a text to the wrong Stark. Robb decides to have a bit of fun with his best friend.