Eternal Sunshine of the Spotless Mind

The original quote, with slang

Clementine: Look man, I'm telling you right off the bat I'm high maintenance. So I'm not gonna tip-toe around your marriage or whatever it is ya got goin' on there. If you wanna be with me, you're with me.

What does it mean?

Clementine: Pay attention: I'm telling you at the very beginning that I require a lot of care and attention in a relationship. So I'm not going to be careful and secretive around your marriage or whatever relationship you are currently involved in. If you want to be with me, you're with me.

The original quote, with slang

Clementine: ...Show me which constellations you know.

Joel: Um...oh...I don't know any.

Clementine: Show me which ones you know!

Joel: Okay...okay—oh! There's Osidius.

Clementine: Where?

Joel: Right there...see? Sort of a swoop and a cross, Osidius the Emphatic.

Clementine: You're full of shit, right?

Joel: Nope. Osidius, right there, swoop and cross.

Clementine: Shut the fuck up!