I'd love to know of anyone can actually re-feel something.

I re-feel. I broke the bone in my left thigh in a car accident about 6 years ago. If I think about it, it starts to hurt again. The injury is fully recovered, but in my head, if I think about that pain a small portion of it comes back to me. I also feel pain for others. If I see someone who is injured my head tells me that I hurt in that place. Certainly not to the extent of the injured person, but I feel that person's pain. Same goes for others' scars. I dated a guy once who had a deep scar on one of his fingers from a paper cutter accident. Every time I noticed that scar my hand would start to hurt. After a while, I learned not to see the scar to save myself the pain.