So I missed my chance with Piper when my big moment came up since my "Romance" button was red, I didn't take it, and thus I began to pursue Curie as a backup.
Well after getting my quest done with turning Curie into a real girl I brought her around to show off to Piper, and lo and behold, Piper wanted to talk to me about something, and yes gave me another shot at her.
Was it jealousy over my new six-bot that set Piper off or was it something else?
So buck up campers, if you miss your chance for romance, it won't be your last chance necessarily.
Still unknown is if you hit the Romance button and fail the first time whether this can still happen or not.