Tis ok me lady. I am just really insecure these days about exactly that issue and I suppose you just caught me at the right (wrong) moment.
As for me offering back rubs, etc, yes, I do all the time. She asks me to do that a lot too. Really, probably unbeknownst to her, back rubs are an issue with me. A lot of the time she would ask me to do that when I really just wanted to hug or kiss her, in a non-sexual context. It seemed all she ever wanted was back rubs and yet every once in awhile she would complain that I never hugged her, etc. WTF? I would LOVE to do that but every time I am with her she wants rubs? Even to the point where I would stop and just hold her and she would make some comment about me being tired or something else to the effect of "so I get no more back rub?" Anyway, that was WAY to much of a post on such a specific thing.
The bottom line is that my W has been conditioned for YEARS to think that any physical contact initiated by me is an attempt to get sex. I know that. She has told me that for a LONG time but I didn't listen. I think it will take a long time to reverse that feeling if ever.