Is it normal to masturbate over my step sister?
I like to masturbate over my step sister ("step" so there is no blood relation) I just find her very attractive I cannot help it. I have recently been masturbating 2 or more times a day over her (when I say I masturbate over her I mean I look at her Facebook bikini pictures and look through her laundry and sometimes when she comes over I can see her from my room so I just go hard out). I feel wrong but also feel very horny when I am going at it haha... Is this normal? Should I masturbate over other people/things and how do I "stop masturbating over her if I should??
I also fantasize about her catching me.
P. I don't really like to maturbate over porn (Please don't suggest it), I have done in the past but it's just not me
Thanks