He's an insanely nice guy. He'll buy a homeless guy lunch and then spend the afternoon hanging out with them. He'll mow lawns for neighbors without pay, and similar. He's INCREDIBLY good with animals and children. <Friendly Face merit and Calming Presence merit>
Dog
...He also can sometimes sniff people when he gets worked up, or chase cars or similar.
Trainer
He's a trainer at a local gym, and also works as a personal trainer for people who want it. His rates are REALLY low.
Flirtatious
He can't help it. He loves women. Not just sexually, either. He tends to flirt.
Smarts
He's lacking them. Really. He's as dumb as a box of hammers, but he's -really- sweet.