I was a with a woman with a kid for 2.5 years, it was a pain in the arse in many ways, mostly because doing things together was an absolute nightmare and getting up early in the morning was kinda not an option not to. But it brings other things, maturity and a kind of joy in other respects.
If you're worrying about being called "dad", and things like that, then you're not mature enough to enter a relationship with a person that has a child though imo as if that kind of thing scares you then you have a good few years of growing up to do first. Being in a relationship with someone who's got kids isn't something to take lightly, you can't just up and get out when you want because there's a good chance the kid will have got attached to you.
If you have any doubts, don't do it for her sake.
EDIT - I just read your op proerly, shame on you for getting involved if you can't handle a kid thinking your their daddy. You've behaved like a real dick and you need to either get out now while you can and not think about it. Or think what you really want, apologise and then discuss the "dad" situation and the kid and so forth.
People like you really piss me off actually...but there we go.









