Poe is raped by Kylo during his interrogation, and finds out after the events of the movie that he's pregnant. Finn helps him cope with becoming a dad, and deal with his PTSD from the assault. Poe and Finn both heal from the wounds Kylo left them with, while falling in love.

bonus, Leia figuring out what happened to Poe (perhaps he opens up to her? sees her as a motherly figure?) and being devastated at what her son did, being devastated at what he is capable of, but also being thrilled at becoming a grandmother (especially after her loss/thinking she would never be one), so conflicted feelings abound