Joshler is a ship of Twenty One Pilots' Joshua William Dun and Tyler Robert Joseph. This ship is also referred to as tysh, but joshler is the more common name.

Joshler is a fictional relationship. Tyler is married and Josh is engaged so it is 100% confirmed that joshler is fictional.

Thank you to xdouxjoshlerx for poo ting out that I haven't done joshler yet. Also this book is a joke but it's surprisingly popular and I'm out here lookin like boo boo the fool 🤡