WTF now ?

So you really do love her? Then have the kid and spend the rest of your life happy with your new family. There are only two things worth pursuing; love, and happiness. Family brings both. Congratulations!
You say you love her, but aren't ready to commit to her, but do want a child? Have the kid, and be a good father to the kid when you get your moments with them. Do the best you can. A broken home isn't a death sentence for a young child. It's not easy, but we all have our crosses to bear.
You don't really love her, and don't really want a kid either? Talk to her about an abortion or adoption. If that's not in her life plans (i.e. she wants the baby with or without you), then do the right thing and at least contribute financially to pay child support and pray the child's mother finds a good, responsible man to raise your child so he/she will grow up right.
Only you know what's right for you, so please choose wisely. Good luck. Surely, this is a decision that will significantly affect the rest of your life.