Is Gamora a lesbian? (Marvel's Guardians of the Galaxy)

just a fun topic for discussion. In the beginning I thought that I would glue the gamora, but the game stupidly does not allow it. Peter just calls her a very valuable friend. In principle, there is partly an explanation for this - Peter already has a passion, although he really wants everything to change.
the game has a background for everyone except Gamora - Drax has an ex-wife, Rocket has a girlfriend, Gamora ... nothing. from this all sorts of thoughts appear. That's why the question is - did I miss something? are there any hints in the game about its orientation?