An AU probably makes most sense for this prompt, but I suppose it could feature a post-dark-side Ben Solo as well.
Just something featuring Poe and Ben Solo having a similar dynamic like Oscar Isaac and Adam Driver: (like here, or in their joint Conan interview) http://hardyness.tumblr.com/post/136765800537/adam-driver-and-oscar-isaac-at-the-star-wars-the
One is a serious and socially awkward introvert, the other is a an outgoing charmer, but they're actually really fond of each other. IN SPACE.
Poe/Kylo or Poe&Kylo: the odd couple
Just something featuring Poe and Ben Solo having a similar dynamic like Oscar Isaac and Adam Driver: (like here, or in their joint Conan interview) http://hardyness.tumblr.com/post/136765800537/adam-driver-and-oscar-isaac-at-the-star-wars-the
One is a serious and socially awkward introvert, the other is a an outgoing charmer, but they're actually really fond of each other. IN SPACE.