Being in one of the most successful movie franchises of all time has spoiled Ashley Greene, who has played clairvoyant vampire Alice Cullen since 2008.

"Twilight has ruined me. When this is all over, flying internationally is going to be very hard for me," the 25-year-old actress says in the November issue of Marie Claire. "It is just not worth it to buy a first class ticket, because of the cost."

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Says the star, "I'm lucky because my dad taught me to be frugal and save. And that's important because I want to know that I don't have to take an acting job for two or three years if I don't want to and that I'll still be able to make my house and car payments and buy food for my dogs."

Greene, whose other film credits include Apparition and Butter, admits there were some downsides to becoming an A-list star overnight. "It was a hard adjustment going from zero to 100 in a day. But it was also hard to talk to [friends], because you don't want to be a jerk. After [Twilight] came out, some people said, 'You changed.' And I said, 'I haven't changed, dude. Your opinion of me has changed because I'm working on this film.' Trust me, my parents would let me know."

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Dating has also been problematic for the DKNY spokesperson, whose exes include "Love Slayer" singer Joe Jonas, 23, and Gossip Girl actor Chace Crawford, 27. "I'm always here and there -- everyone in my industry is -- and that's why a lot of relationships are fleeting," Greene tells Marie Claire. "I've gotten very good at detaching whenever I have to go away for three months, which I realize is hard on friends and kind of selfish."

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She explains, "You go on a couple of dates, and then someone ships off to do a movie. It's not like you're going to fly out and see them, because it's not serious enough for that."

This article originally appeared on Ashley Greene: "Twilight Has Ruined Me"