First of all, lemme point out that you shouldn't be looking for real life in porn movies. Porn is porn...and real life is something different.
Around here, we recommend using a condom at all times for oral sex. Why? Because of the huge risk of transmitting an STD/STI (either from your partner to you, or from you to your partner).
I can't tell you "what girls like". If you want to know what your partner likes, then you're gonna have to ask her. I can tell you, however, that she'd probably really like to avoid getting an STD in her mouth or throat...so the use of a condom is an excellent idea. And as far as whether or not your partner would like to continue a sexual interaction, or would prefer not to...once again, you're going to have to ask her in order to find out. Communication is a big deal.
Communication, and Safety.
Safe, Sound & Sexy – A Safer Sex How-To
Mouthing Off On Oral Sex
A Quickie STD/STI Risk Assessment
There's hair there for a reason!
"Never insult an alligator until after you've crossed the river." ~Oriental Proverb