Whats best for her....

Do what you feel is best! I believe and this is my opinion, that if he didn't want to stick around in the beginning he can eat my shorts and move on with his life, his daughter wouldn't be in his life! If you think he will be a good father and be there for her, then go right ahead and bring him in the mix but don't bring drama into it! Keep it on a friendly level, he's her father and your her mother and that's it, nothing more, nothing less! Be strong mama and good luck with whatever it is that you decide~

do you think he deserves a second chance? if not then there is your answer...

dont be with him just because of your daughter... it wont work out in the long run...

it is never the right thing for your child to be with someone just because they're the father of your child. If you know its not going to work out, and that hes not right for you, you're just going to end up being miserable with each other, which in turn your child will have to deal with as well. Not fair.
Besides, do you really want to be with someone who runs away at the first chance something gets hard?

My mom was a teen mom, and my dad was a putz. He got her pregnant and was basically out of the picture. I saw him sometimes and I decided on my own that I didn't really like him - he was kinda weird to me. I am 41 now, I haven't seen him since I was like 12 - but I wouldn't accept your baby's fathers BS. He's in or out. Period.

Its a lot of responsibility when you are young to deal with this, however, it is what it is - and you have to do what is best for you and the baby - and it may not involve him.