"Maybe I don't usually have reason to." In most any other situation he would have acted offended, pretend that he thought she meant that just because he was green, he couldn't blush like every other white person. Maybe throw in that just because she was passing for a baseline human didn't mean she got to judge verdant Americans. He didn't say it this time.
"So, and you don't have to say yes, but I'm just going to throw this out there. You like me, don't you?"