>>320488430
Maybe you could work on your cuddling technique. I have FBT but keeping it charged is hard to remember so usually I just use 3 point. People still headpat and cuddle me a lot. 
What made a huge difference for me was not getting FBT, but working on making myself more huggable, softer looking dynamic bones, making more expressions. It's very good to provide feedback to person headpatting you. The way I do it is first try to get them hooked so I agressively nuzzle against their hand. If they change petting spot by themselves, that's good, got them, continue nuzzling against the new spot. If they keep on petting same spot for too long, try to gently encourage them. For example moving your head slowly so that your chin is under their hand is a good move. It's very visible and won't be mistaken for a random movement. 
If you can naturally take it from here, that's perfect. 
If you can't, then just remember this basic gameplan and slowly work on building on top of it. I'm sure you can learn how to be better at it and enjoy more headpats! Let's all work towards a softer and comfier atmosphere.

I know this post is gay and autistic but maybe it will help someone.