Originally Posted by
GAMEchief
Why the fuck would you tell him that? Way to imply unplanned pregnancy.
Also, dress nice and use your manners. They don't have to like you. You just have to not be a shit. Engage them in conversation. Answer their questions in a way that makes you look good -- like how good your grades are, or how high your ambitions are, or how important education is to you, or how much you love your job, or how important you think family is, or what the fuck ever. Be interested in their interests, but don't neglect your girlfriend's attention.
Overall, they're human too. Treat them well and use basic social skills and mannered politeness, and you'll be fine.