>>716199128
It's implied that they were living together in Phoenix's office so it's even harder to say that they didn't fuck at one point.
Plus in either JFA or T&T I recall someone calling Maya Phoenix's girlfriend and neither of them corrected that person when they used to before.
And there's that one easter egg in AAI1 where Nick and Maya are on a boat ride that's supposed to be for couples only.
I think Capcom desperately wants to say that they're in a relationship but can't because angry fujos and permavirgin protagonist rule.