Ooh I love [name_f]Demitria[/name_f], it’s so pretty and a bit unexpected.
[name_m]The[/name_m] obvious one is [name_f]Demi[/name_f], which I think is lovely on its own. [name_m]You[/name_m] could also do [name_f]Mia[/name_f], [name_f]Mimi[/name_f], Demi-Mae, [name_f]Dee[/name_f], [name_f]Dede[/name_f], [name_f]Miri[/name_f], [name_f]Tria[/name_f], [name_f]Ria[/name_f], [name_f]Mitzi[/name_f], or Dimi.
If you want something a bit more fun, I’d maybe go with [name_f]Demi[/name_f] [name_m]Bear[/name_m], [name_f]Demi[/name_f] [name_f]Lou[/name_f], [name_f]Mimi[/name_f] [name_f]Moo[/name_f], [name_f]Demi[/name_f] [name_f]Bean[/name_f], or [name_f]Demi[/name_f] Bug. I also weirdly like [name_f]Mitzi[/name_f] for it, even though it’s not super obvious.
My favourites are probably [name_f]Demi[/name_f], [name_f]Miri[/name_f], [name_f]Mia[/name_f], and [name_f]Mitzi[/name_f] 