I don't really want to unfriend this person but I really REALLY need these requests to STOP! So, I did a bit of research and found that you CAN block app requests on Facebook. YAY!
Here's how to do it in four easy steps with photos I took with my phone to illustrate it:
1. When you are logged into Facebook, at the very top right hand corner there is an arrow, click on it and it provides a drop down menu. Find "settings" and click on it.
2. Once you are in the settings mode, on the LEFT hand side of your screen, there is an option titled "blocking" click on it.
3. On the next screen locate "Block App Invites" then type in the name of the person who is the request offender. This will block ANY app invite this person wants to send you.
4. After you have blocked a specific person, you may also block the app entirely to prevent other request offenders, who have yet to surface, from sending you requests. Just type in the app you wish to block in the "Block App" section. I think I have 20 or so already blocked and the list is growing!
Blocking complete. This process only blocks app requests and apps from getting to you or being visible on your timeline. It does not block the person or any other post they may post on their timeline or yours. I hope this is helpful to you and will prevent some Facebook rage!