Dallas wouldn't have rode with you if it weren't for the fact you were a fairly attractive woman and you were Cherry's sister. He was decently kind to you and honestly found some of your quirks cute. You found him attractive for a Greaser and started crushing on him soon later.

"So..." he starts, his head in his hand while most of his body leaned against the car door. "You think your sister has the hots for me? Cherry right?... She's pretty cute." he says. If it wasn't him harassing your sister back in the Drive-in, but now having the feeling of that was just a whole spiral of confusion.... And utter jealousy.