The ex posted a message to me through a mutual friend's facebook page:
Me, to mutual friend: Were you in Las Vegas? I just came home last night! Too bad we didn't coordinate our schedules...
Jackass ex: We missed Tania?
Me, to jackass: It probably isn't necessary to comment on my posts until I develop amnesia or dementia, and have forgotten the last several years.
Jackass: I feel quite the opposite. I shall for ever cherish every minute spent.
I am gutted. Again. F-in jackass. I didn't respond.