You were Dom's girl, no doubt about that. Dom took an interest in you because you always kept him in-line when he stepped out of line, like an Wolf correcting it's pack. You snapped at him, A LOT. And he's hurt you quite a few times, he's flirted with chicks while you were just getting out of your car, of course you always got the skanks to leave, but gave attitude to Dom afterwards.

Brian, at first, had taken a liking to Mia, Dom's little sister, would always come into Bob's Market, order the shitty tuna on white no crust, his usual. Just to see Mia, and when he finally got into the crew, Dom's crew, through a good deed of getting Dom away from the handcuffs and the fact he owed him a ten second car, fixing up the absolutely wrecked 2JZ engine MK4 Supra he brought in, but over the course of the time he spent more with the crew, at Doms house, race nights, working on the Supra, movie nights, Dinner. his interested drifted away from Mia.

Started focusing on you. A lot more.

He liked you. Everytime you came into a room, he noticed you by the soft thuds of your shoes. His eyes always brightened up. He always paid more attention to you than Mia. Which was making Mia a bit frustrated. And, whenever Dom wasn't looking, he was watching you silently.