Basically the same sort of thing as a girl next door. He's sweet, charming, and quite cute, although he doesn't seem to know it.
Guys next door don't really dig the whole taking advantage of a girl thing, and although able to be one of the lads, they can be great mates with girls as well.
They dress casually, and although they don't try to stand out in the crowd or be the centre of attention, they still shine.
Guy's next door usually have one of those laughs or smiles that is able to make you feel instantly happier.
As part of a relationship, guys next door are typically the kind who seem quite casual about dating- they don't try it on fast. But, as with a girl next door, the guy isn't seen as being that involved in a relationship... but anyone who's been in one with a guy next door will know that they're dark horses, and alot more fun and pasionate than you first thought.
So if you find a guy next door (and you happen to be a girl next door)... this one's a keeper.
Bring him home to the parents no problem!
Seth, from the O.C is a bit of a guy next door....although he's got a bit of a nerd thing going on