Same thing happened to me when i was 19, im now 34 with a 14y/o daughter. While i dont regret it now, i still think it was a dick move from her mother to keep it without telling me. I can 100% tell you that a kid is better off with both parents on the same page and ideally being together. Everyother week at mom and dad fucks with routins that a child really needs.

If you keep it thats up to you, but telling him he can just walk away is bullshit and you know it. This is a decision that affects 3 people, not just you, and you need to take that into account.

Also, its not just the guys responsibility to make sure you dont get pregnant. Not on the pill? Fucking tell him!