She did recognize his face. But he just seemed like a nice guy, so she wrote it off as a co-incidence. Cause whoever she recognized him as was 1: clearly someone like her and 2: supposed to be dead.
Once she saw that he was not only Golden Man, but the Golden Man who outsmarted her and ended up technically beating her, she realized that it HAS to be whoever she's thinking of. Just different somehow.
Wouldn't surprise me if she's like an older sister type of guardian towards him. Nothing erotic really has happen between the two
Possibly, because she recovered really well and didn't press the issue. If she was actually together with him, I could expect a "you have to remember me somehow" sort of thing.
But this is also superheroy enough that there wasn't any sort of pressing of the romance buttons when Blue and Golden Man went back to her place together and she saw him naked, and oujo there is blushing at the hug. They also get along great and
feel like an all-time hero/villianess couple, so who knows?