I like you do you like me

Your family has been getting together with your stepcousin's family for years. Now that you're both 18, you've noticed that Mia has really grown up! She still likes to color and play silly games, but now that the two of you are of age, it's time for a new game. Your parents are right outside, but that doesn't stop her from initiating a different kind of fun. She's so damn cute, and you feel...