Stopping birth control without telling her SO.. opinions?

Alright ladies, I need some back up here. My friend keeps talking about wanting to stop taking her bc without telling her boyfriend because she wants a baby. I guess her plan is to tell him she got preg on the pill if it happens? I keep telling her it’s wrong to do that but she won’t listen to me. I feel like it’s the same as a man taking off a condom in the middle of sex without your knowledge. Technically unconsensual sex, since he consented to protected sex right? What are your opinions on this matter?