Poe Dameron and Leia Organa
Learning the truth would be hard for Poe but it wouldn't be something he couldn't cope with. His respect and loyalty to Leia wasn't just because she was his commanding officer. He definitely viewed her as a motherly figure and would forever be thankful to have her in his life. And of course getting to know Rey would be a priority, once he knew their connection.
Poe nodded, "I'm going to put in a request to fly whatever they'll let me" he told her, "Maybe they'll let us form our own kind of crew" he added hopefully.