First of all, his neighbors filed the charges because they were jealous.
Second, how could be tried for stalking if the sexual encounters were obviously consensual by their repetition and lack of complaint on the woman's behalf?
Reminds me of a cartoon I saw onetime somewhere. A landlord is beating on this guy's door. A man answers the door wearing only a towel wrapped around his waist. The towel extends down to the man's knees. Peeking out from the bottom of the towel that is around his knees is one of his private parts. The landlord says to the man, "What's all that screaming in here?"