My girlfriend has a habit of thinking of scenarios that will never happen and then asking me a question about them usually about our relationship and then getting upset if I don't answer correctly.
One such example is:
We were watching an episode of Doctor Who and she asked, If we were both married until we were 80 then you were made into a 20 year old body again would you still love me forever even after I died?
Now of course this is never going to happen and I said well I don't know and its possible I would eventually love someone else I mean I could live for a really long time after you died if I was 20 again and she was 80.
This upset her and she said I should stay alone forever after she died and should never love someone else even many years after.
HowI am 23 and she is 19 if that helps and we have been together 8 months. How can I tell her that I don't like these kind of hypothetical questions, without resorting to corny eternal-lover's oaths?