See, everything I saw was that you had to do Vette fully, and then do jaesa. And to not even talk to jaesa before finishing vette's. But I can't find anything about that flirt option prior to her officially being in your crew.
So I know you can romance and marry them both if you fully do vette before jaesa. But what if I flirted with jaesa in the story dialogue before she is officially part of the crew. When vette it talking about showing her to her quarters, I chose the flirt option. I have never talked to jaesa in her room. Does that flirt option break the possibility to marry them both?