I posit that Gambit is gay.
No judgment now, I am quite supportive of love in any form.
Always seen in the company of other males, usually "playing cards".
GF? Rogue. The only woman who cannot be touched. Ever. In any manner.
History? Refused to marry the female head of a competing thief clan. What if that leader had been a guy?
Keeps using long coats in lieu of a skirt.
Intermittent Cajun accent.
Hangs with guys in leather. And more eye make-up.