That’s weird and also scary… Like → Why??? Did your twin never went out of the house??? 
I had a weird and confusing dream few years ago… I was in a huge house, around 19th century… I was a servant of a rich family, but I fell in love with the rich son. Don’t ask me why, but suddenly me and the guy (my lover → I never saw him in real life…) were somewhere else in the forest… And he k*lled someone else with a huge boulder… 
Then I woke up.
Another confusing dream few years ago… I visited my aunt and I heard my mom say 'We have a surprise for you. Now there is someone who is smaller than you…" I saw my aunt coming in without a torso only her head hands and feet…
So, over all I have weird dreams… But after those dreams I had never one again… 