Ok so I love the idea of really friendly and outgoing Finn just wanting to be friends with everyone (within reason of course. Every one of the pilots he knows by name and goes out of his way to say hello to them every morning)
And he’s still new to all this “normal” stuff and of course Poe in return is still finding out just what all Finn knows about things
And one day they’re chilling and Poe is like “have you ever kissed anyone Finny?” And Finn is like “idk what that even is” but he’s so excited to learn anything Poe will teach him and he bugs Poe about showing him.
Poe is like “well it’s kind of like a hug…” And Finn gets excited cause HE LOVES HUGS AND GIVING HUGS AND RECEIVING HUGS SO KISSES MUST BE GR10 POE YOU HAVE TO SHOW ME
and Poe like tried to show him on BB-8 but bb is like hell no you’re not putting your lips on me
And Finn is like"bro what’s the deal just give me one"
And so they kiss and BB makes high pitched excited noises
Bonus: Finn goes on to give all of his friends kisses whenever he sees them because Poe forgot to share that kisses aren’t EXACTLY the same as hugs woops