The Storm Troopers were never given the talk. Relationships were distractions, so any talk of sex and romance were avoided at all costs. Of course, as they weren't kept in a cell all the time, they knew what sex was and knew that other people loved each other and got married, but the idea never really applied to them so it was more of just a concept.
Post TFA, Finn is out from under the First Order's thumb and starting to experience what life is. Some things are easy to adjust to, others are hard. The hardest thing to get used to is that it's okay to fall in love. One day, Poe tells Finn that he cares for him as more than a friend and Finn starts to cry. When Poe asks what's wrong, Finn tells him that he loves Poe, too, and that terrifies him because it's something that was never allowed and Finn's never experienced it. Lots of h/c ensues.
Finn/Poe- The Talk, h/c, angst, past neglect
Post TFA, Finn is out from under the First Order's thumb and starting to experience what life is. Some things are easy to adjust to, others are hard. The hardest thing to get used to is that it's okay to fall in love. One day, Poe tells Finn that he cares for him as more than a friend and Finn starts to cry. When Poe asks what's wrong, Finn tells him that he loves Poe, too, and that terrifies him because it's something that was never allowed and Finn's never experienced it. Lots of h/c ensues.