Reply #4: Sean, I know you aren't going to want to hear this...

[Technowitch]

...but walk away.

She cheated, she lied, and she's using one of the worst drugs on this planet. What makes you think ANY of this will change anytime soon?

Do you want to make yourself responsible for another man's child? To be part of caring for a baby that is going to have severe health problems right from day one (assuming she's even able to carry it to term)? To end up having to parent this girl, too, since obviously she's not fit to be an adult herself?

Someone who cheats will cheat again. And when you're addicted to meth, you don't just give that up unless you really, really want to -- and from everything you've said here, she has ZERO interest in doing that.

You deserve better.