Clearly lying about it makes it true... duh /sarcsm

Because you don't want to worry the girl. But still, I'd be pretty angry if I found out the condom broke when he says it didn't.

Uhm... no? As far as I know only the ones who aren't smart enough to do it right.

Umm... yes? I know quite a few people who have been consistently on the pill and still get pregnant. My ex boyfriend, for example, is a birth control pill baby. It isn't a 100% effective form of birth control, taking it doesn't mean "I'm not going to have a baby." it just means "I have more of a chance not to have a baby, but I'll have regular periods and better balanced hormones."

At least someone here understands the pill doesn't always work.

Wrong. Even Planned Parenthood admits that 60% of abortion clients were using contraception when they became pregnant. Breakthrough ovulation can happen on the pill, which is why one of its secondary mechanisms is to thin the uterine wall so the baby can't implant. Condoms also have shown that their effectiveness decreases over long term use. Even the IUD isn't completely guaranteed, as evidenced by the high abortion rate in Chinese villages where it is the primary form of contraception. My childhood friend had had cervical cancer and had her cervix removed, one ovary and tube removed, a partial hysterectomy, and the remaining tube tied...and she STILL got pregnant and had a baby. People need to realize that just because you're using contraception doesn't mean you can't get pregnant. They are not a guarantee and I find it funny that the first thing people assume with unplanned pregnancy is a lack of contraception.

grapefruit juice? That's the most ridiculous thing I've heard. And if people read the warnings on their pill, then they would know antibiotics can negate the effect of the pill.

Grapefruit juice isn't that crazy -- one particular liver enzyme breaks down grapefruit juice. This is the same enzyme that breaks down the hormones used in birth control pills. If that enzyme is overloaded breaking down grapefruit juice, it takes longer to break down the hormones as well. Data looking at this scientifically is mixed, though. It's not totally clear if it's enough interference to enable pregnancy. There is, however, definitely a huge list of drugs that are affected by grapefruit juice consumption.

Most of the commenters aren't saying he shouldn't be having sex, just that he should be aware of the consequences of it before he has it. There is a difference.

Agreed.