​After a fantastic run of four-and-a-half seasons with the Chicago Cubs, World Series and Cy Young winner Jake Arrieta has a new home. ​The ace agreed to a fat three-year deal with the Philadelphia Phillies over the weekend.

However, Arrieta's departure from the North Side is anything but heated. The veteran starter watched his career turn around during his time with the Cubs, and he showed fans just how much the franchise has meant to him Monday night in a handwritten letter he shared on social media:

"On the verge of walking away from the game I loved dearly, Theo called, and the transformation began," he writes of the fateful day in 2013 in which Cubs GM Theo Epstein made the overture that led to a beautiful baseball relationship.

​​Handwritten notes have all but disappeared in today's society, but Arrieta's captures all the emotions and checks all the boxes.

Arrieta's career started quite shakily. ​Spending his first three and a half years with the Baltimore Orioles, Arrieta had just a 20-25 record with a 5.46 ERA. All told, Cubs fans are awfully happy he decided not to walk away from the game.

​​​With Arrieta now entering the next stage of his career, Cubs fans will have to wipe away the tears after reading that letter and eventually watching No. 49 pitch for a whole different squad in 2018.

"Lastly, thanks to all the Cubs fans around the world for standing with us, and investing in us even when times were tough. You will all be missed dearly," he wrote. ​"Thanks for the memories."

Chills! You're a class act, Jake.