In a gay relationship is it proper to call your engaged partner fiance or fiancee?

I was recently exploring wikipedia and stumbled across the word “engagement” which brought me to fiance and fiancee.

Upon studying, I know the word is French and that it has masculine and feminine attributes but is the male called the Fiance because of the masculine connotation according to the French language or is it in the assumption that it is traditionally the male that proposes to the female.

So, with all that said, is it proper for a gay man to say, of his partner, “this is my fiance” or “this is my fiancee” ?

Assuming, of course, that the gay man is the proposer and his partner is the proposee. :D