It is not just women who take full responsibility of taking birth controls when both parties agreed on having one. Men do also have a way on using it through vasectomy which is minor surgical procedure wherein the vasa deferentia of a man are severed, and then tied or sealed in a manner such to prevent sperm from entering the seminal stream in which prevents woman in becoming pregnant. I think this a brave step for a man to underwent this procedure since there are only few cases I knew here in our country, for most men are not into the idea.
But in cases wherein he has changed mind or plans, and would want to have another baby. He can opt to undergo a vasectomy reversal, which is s a surgical procedure that re-approximates the cut ends of the vas deferens, restoring the flow of sperm from the testicle to the prostate, thus having the ability again to achieve and get his partner to conceive a baby. You could check out Minnesota's Men's Health Center for some valuable information regarding this procedure, you could also check out the testimonials of some men who underwent and claims the succes of it. You need to arrive at a wise decision whenever you take any kind of action, mostly if it involves and erisks your health.