Hah, I love that awkward silence where she's waving her arms, and he's just dumbly staring at her and says. "What's happening?" xD He has zero clue what she's trying to get at. That was pretty funny.
As to him being gay, don't care. The sexual orientation of the characters is irrelevant to me one way or the other. Comic book writers have changed so many damn things with so many damn characters, in order to tell their particular story, getting worked up over them deciding to make an X-Man gay isn't even a blip on my radar. I just hope the story is actually good for the people who read it. Beyond that, don't care one bit who he wants to sleep with, or any of them for that matter.
In the words of whoever that other X-Man was. "I choose to eat". So yeah, getting dinner, they can have their talk all they want.