Do people with long term (3+ months) sometimes recover 100% overnight?! However unlikely, it would be a nice thing to hope for!

I just went through a difficult breakup with the first person I ever loved, and a major component was the concussion (there were other factors too). I don't think she understood my reaction to it, and how anxiety is a symptom, and was really upset by how I handled everything initially. She was supportive in many ways despite that, but I went off into my own little world and she was exceedingly busy and we just drifted apart over the course of the first 4 months or so.

After I got worse things sort of came to a head, and I decided that I needed to get away from the stress of thinking about this concussion and how it was affecting my life and our relationship, and she'll be abroad for about 6 months anyway doing fieldwork, and it wasn't fair to expect her to stay in a long distance relationship just because she's afraid of what it might do to me.

Anyway, yeah, PCS can be a tremendous burden on relationships...