Many men know nothing about contraception

Unofrtunately, this is often the case for many men. Because they're not as aware of the risks concerned, they often rely on you to be safe. It's not right, but that's the way it often is.

Of course, it's important to know what you're doing, so even if you're in a relationship with someone who seems very mature, don't assume he's reliable when it comes to contraception, and make sure yourself.