I've been living in the same condo for 11 years and share a rear patio/deck with the unit next to mine. The owner of that unit has always rented it out and 4 months ago a young girl about 30 moved in. I see and speak to her often and I'm confident she has no idea that I see her naked a few times a week and have witnessed her masturbating many times. She obviously doesn't realize that one of the shades she had intalled on the back windows has been up about an inch and a half since she moved in. I can't see into her bathroom but I see her come out after showering and mostly se her undressing most of the time. She does seem to masturbate often and thankfully she is always naked when she does. If it dark enough out back I often watch her with only my open bathrobe and jerk off as I watch her. I love seeing her orgasm especially when she uses her vibrator which seems to make her orgasm mulitple times.