McKenzie: So do you have a boyfriend?
McKenzie: Why not?
Summer: Because I don’t want one.
McKenzie: Come on; I don’t believe that.
Summer: You don’t believe that a woman could enjoy being free and independent?
McKenzie: Are you a lesbian?
Summer: [laughing] No I’m not a lesbian. I just, don’t feel comfortable being anyone’s girlfriend. I don’t actually feel comfortable being anyone’s anything.
McKenzie: I don’t know what you’re talking about.
Summer: Ok, let me break it down for you.
McKenzie: Break it down!
Summer: Ok. I, like being on my own. I think relationships are messy and people’s feelings get hurt. Who needs it? We’re young, we live in one of the most beautiful cities in the world; might as well have fun while we can and, save the serious stuff for later.
McKenzie: You’re a dude. [to Tom] She’s a dude!
Tom: Ok but wait–wait. What happens if you fall in love?
Summer: You don’t believe that, do you?
Tom: It’s love, it’s not Santa Claus.
in 500 days of Summer