Seriously. If a guy knows he absolutely can't handle the idea of either a baby or an abortion, he should wear a condom and take some responsibility for trying to control the possible outcomes of piv sex. Ultimately it's up to the female partner and she may not always make the choice he wanted or that either of them even expected.
A good friend of mine ended up being a father when he badly didn't want to be because his fwb, who had sworn she didn't want kids, changed her mind when her bc failed. And you know what that was absolutely her right, because it had been an honest accident (she went on antibiotics and didn't realize what that would do) and at that point she was the one with a potential life growing inside her so she had to be the one to decide.
Me, 30ish bi female, been doing solo poly for roughly 5 years. Gia, Clay, and Pike, my partners. Davis, ex/friend/"it's complicated." Eric, Gia's husband. Bee, Gia and Eric's toddler.