Is irene adler gay

It normally doesn't. But when people insist that she meant she is lesbian cause she said "i am gay" and therefore she shouldn’t have been sherlock's love interest - then it does.

IRENE: "Yes you are." JOHN (turns away momentarily and then turns back to her, quietly): "Who who the hell knows about Sherlock Holmes, but – for the record – if anyone out there still cares, I’m not actually gay.".