Forge I didnt mean to say that there was something wrong with you babysitting per se. What I meant was that IMO it is too early for you to have ANY CONTACT with her child. I know you are a good guy that isn't into hurting anyone, especially NOT A CHILD. But when you start *playing daddy* - which you pretty much have been as to a child under the age of 18 (I know, I am VERY old fashioned when it comes to this viewpoint) only "mommy and daddy" sleep in the same bed.
I think that maybe the two of you rushed into combining her *adult female life* with her *mommy life* waaaaaaaaaaay too soon and there is no going back.
Either try to talk this out with her or just break it off clean and simple and don't make the same mistake again in the future. If any other single mom suggests that you have ANYTHING to do with her kids until the two of you are VERY COMMiTTED (I am talking nearly married) then I suggest you run like a mad man in the opposite direction.
My advice would be the same if you were female.
Parents should put more thought into separating these two lives before even THINKING about co-mingling the two.
You aren't a bad guy and she isn't a bad person. I just don't think that either of you saw this *issue*. You never having had kids, I dont fault so much. But her? How many other guys has she brought around her daughter and how many guys will be "next one in line"? As I said, my viewpoint is the same regardless of gender.