In today’s New York Times “Wedding and Celebrations” section, this headline:
The question: In a male same-sex wedding, can either partner actually be said to be “bridegroom”? There’s a technical issue with the word, to wit, a notable lack of a bride.
They could each be a “groomgroom,” but that’s just redundant and/or recursive.
Possibly best to just call them each “groom,” and then not think too hard about it.