perfect boy for sage. trey hart defines cool. >> so, what do you talk to your girlfriends about when you take them out on a date? >> i just tell them what i want to tell them. >> like what? >> i love them, stuff like that. i'm not bragging. it's just that girls like me so much. >> he's a first grader turned chick magnet. but it's not trey's car that makes him so popular. >> i'm pregnant! >> it's what he did in his mom's car that drives him to viral video fame. here's the backstory. trey is a very loving big brother now, but back then, he just wasn't ready for the competition. >> oh, my gosh, i'm telling you, the crying. oh. >> because amaya, she cried a lot and he was like, no more babies. >> so, when mom decided to tell him he was getting another sibling, well, he wasn't thrilled.