for once Marvel did something right and before some people think im homophobic or whatever here is why they made the right choice, simply put Gambit is straight. Never once aside from fan fanfiction and fooling Daken into thinking his phareamones were working on him, Gambit has never showen any sexual preferance to men....well that time with Shaws Chest

and kissing Jacobe who was a woman at the time, anyway in Asmus words from the interview
I never got past pitching the first part, though, as word came down we wouldn’t be redefining the character as such the word is redefining the character , therefore Marvel believe he is straight and does not need to be redefined as Bi,