I'm not dissing Milf's, nor am I stating the unacceptability of Step-Dads. I totally forgot that the Hetro Life Mate has a Step-Dad, I just think of him as Joe's Dad. I think that marriage changes the dynamic, as you are now legally accepting responsibility for the kids.
What I'm saying is that just because you date a girl who has kids, doesn't make you the father.
Yes, you maybe doing a better job of it than the guy who originally planted the seed, but until you make that commitment legal in some way, don't talk to me about the trials and tribulations of raising a family. 'Cause you know what? At any time, if you felt uncomfortable or unhappy, you can just walk away. You owe nothing to those kids. If I ever leave my wife or whatever, I still have an obligation to my son, no matter where I am or what I'm doing.
I have never been in that situation, having never dated a woman with kids,(and more power to those hot single mom's out there who do date) I'm just not sure how I would handle it. I think I would be tempted to discipline the kids to my standards, and that probably wouldn't work out.