Alternatively titled the one where they're both Force sensitive and know Snoke will make their lives a living hell if they're found out. They sense each other through the Force and set to work helping each other keep it under wraps. At first it's just out of a 'if you go down you'll take me with you' fear. Then it turns into friendship. Then it becomes something more.

My firstborn for soft, gentle sex where they're sensing exactly what they're doing to each other through the Force.