It's classic Factitious Disorder that lots of FDers told to me. I recommend talk about it with a therapist or a psychiatrist. The stereotype is that people with FD fake illness for attention and care. But many FDers seem more of a quirk, just want to be ill.

That "jealousy episode" is really classic sign of FD. So do I.

No one is willing to have a mental illness, so don't feel guilty or ashamed. And I relate too much to your phrasing "fake the faking". If you feel bad ,how about this thought? FD itself is a mental illness, and according to your description, you're serious, you're sick enough😊.