What does that mean? Who decides?
A woman would have to declare that she would abort her fetus but it is illegal so she is being forced to carry an unwanted pregnancy.
Why is he more responsible for the pregnancy than she is?
What if she tells him she wants it and then changes her mind?
What if they both want it and then both change their minds? Will you criminalize the mind change?
Never mind negatives, your whole idea is incoherent.
A woman being forced to carry an unwanted pregnancy is already being forced into "being responsible" - it isn't like she can offer to transfer the pregnancy to a man. What is the repercussion for a man who impregnates a woman when she is forced to carry to term?
Please explain your case of a mutually consensual act where the consequences are criminal for one of the two parties but not the other? Are we only discussing the person who slips off a condom? What about the woman who became pregnant without the man wanting it?
I don't necessarily oppose it. I simply have no clue what you are proposing.
Intercourse itself isn't criminal, but impregnating a woman who doesn't want a pregnancy should be. A man would have to prove that in addition to taking necessary precautions, he discussed the potential pregnancy with a woman and that she understands she could get pregnant and cannot abort the child. A man should be responsible for his sperm at all times. Impregnating a woman who wants to be pregnant is not a crime. A woman who becomes pregnant even if a man doesn't want it is still the one who is carrying the child to term. She is already "being responsible" for the child.
I am open to any ideas that actually make men as responsible for unwanted pregnancies as women, when women cannot abort.