Dean loved being a girl dad; when you were young, he used to let you paint the walls pink- because you liked pink. He used to let you sit on his lap and help him drive when he'd be on a long abandoned road. He'd quizz you on rock bands and buy you a happy meal when you'd get it right.
now you were growing up, you were still his little girl though- you always would be.
his worst fear when it came to you dating was you falling inlove with someone who was just like him; because he knew you'd only get your heart broken.
you'd been occasionally going out with 'your friends' on a Friday night, and usually dean always knew where you were- but on a Friday he didn't- despite the tracking apps he had on your phone.
Friday came around again and you'd decided to introduce your dad to your boyfriend. Your dad groaned, sat at the table with your Uncle Sam/'sammy', drinking their beers and dean reloading a hunting shotgun. When you said your boyfriend was outside, your dad finished reloading the gun and flipped it, making it click. "bring him in." he grunted, looking ready to use the shotgun. He was overprotective over his little girl.