...and it didn't work for my parents, which is why I'm sitting right here today. I'd classify the choice you're describing, especially given what you're asking, as not knowing there are risks.

It is much less likely, to be sure. Considerably so. And it's understood that it is highly UNlikely if a guy urinates before sex, since urine will tend to clear the urethra of any traces of semen from a previous ejaculation.

But that is not without risk of pregnancy, and certainly poses the same risks of sexually transmitted infections as anything else. Especially when you're young, the risks of pregnancy AND STIs are nearly always higher than for older folks, so you really have to bear in mind with your sexual choices that, if you're of the usual age group we see here, your risks are probably higher right now than they are for the whole of the population.

For condoms to be effective, they need to be used for ALL genital contact, every time, from start to finish. If you want to help them feel better, use extra lubricant, including a few drops inside the condom before your partner puts it on.

What my boyfriend and I do sometimes we have sex for a little bit without a condom just because it feels better, but when we start to get really, really into it we put a condom on. From what I've read pre-cum can't impregnate you, right?