Excerpts from "Chasing Amy" Scene, where Silent BOB explains to Holden & Jay, why he's still chasing Amy.

BOB
You're chasing Amy.

...

BOB
(to Holden)
So there's me an Amy, and we're all inseparable, right? Just big time in love. And then about four months in, I ask about the ex-boyfriend. Dumb move, I know, but you know how it is - you don't really want to know, but you just have to... stupid guy bullshit. Anyway she starts telling me all about him - how they dated for years, lived together, her mother likes me better, blah, blah, blah - and I'm okay. But then she tells me that a couple times, he brought other people to bed with them - menage a tois, I believe it's called. Now this just blows my mind. I mean, I'm not used to that sort of
thing, right? I was raised Catholic.

JAY
Saint Shithead.

*Silent Bob backhands him. Jay raises his fist as if to
strike.*

BOB
Do something.
(to Holden)
So I get weirded out, and just start blasting her, right? This is the only way I can deal with it - by calling her a slut, and telling her that she was used - I mean, I'm out for blood I want to hurt her - because I don't know how to deal with what I'm feeling. And I'm like "What the fuck is wrong with you?" and she's telling me that it was that time, in that place, and she didn't do anything wrong, so she's not gonna apologize. So I tell her it's over, and I walk.
...

trying to get back the girl that got away...

To be so freaked out by a girls sexual past because it makes you insecure, inferior and/or scared that you take the foolish step of dumping her, even though you still love her. Later on you realise of course that you f#cked up big time and try to get her back and look like a f#cking idiot.

Kevin Smith's third movie

Trying to find Happiness/Love/Perfect Situations, usually a practice in futility. Derived from the figurative way Silent Bob uses the phrase to assist Holen McNiel in the movie Chasing Amy

From the movie Chasing Amy, it means when you dump someone who was perfect for you for a reason that you eventually realize was not worth ending the relationship for. However, by this time it's already too late. The other person no longer feels the same way about you, but you will spend the rest of your right regretting this decision that you can never change.

Chasing Amy are a pop/punk band from Sydney, Australia. Consisting of Justin Kent, Peter Fawcett and Brad Fawcett.