I'm not from a rich family but in the house I grew up in the annual income of my parents combined was $100,000 so we were well off.
Peachy made a good point that this is a support forum so I'll actually answer Marco's question. I got support from people and the least I could do is give it back.
MARCO, don't get too insecure about her liking the males in those movies. It doesn't mean that she's totally going to betray you. It's most likely that she's trying to get you a little jealous. Or even if she was turned on you shouldn't let jealousy ruin a relationship that you've had for a year. You're bother already living together. Until you see real evidence that she's going to leave you or go behind your back enjoy things while they're going good. If you start making stupid commets like "the guy in that flick is better then me" or whatever you'll seem insecure and she'll possibly think about moving on.
Lighten up about it. Lifes too short to waste time making an issue about nothing. With that being the only problem that you're writing about it sounds like things are alright.