I think he's talking about different things. Maybe love, God, or the city.
Obviously they all point to love=)
"Hear her voice, shake my window, sweet seducing sighs"
And the best part(in my opinion):
"If they say Why, Why, tell 'em that its human nature, why ,why, does he do it(&me) that way?"
Ok, so love is part of human nature...Why does God make it that way, why does God make him love like that?
"See that girl,She knows I'm watching, She likes the way I stare" Speaks for itself.
"I like livin' this way,I like lovin' this way" Also speaks for itself.
And all the things he says about the city, town, walls, streets, also points to where maybe he wants to be free and experience the town/life.
When it talks about strangers, maybe it means- meeting new people.
:)