bringing on the heartbreak

[brennan]

Could someone please explain those words in bold:

1. you're bringing on the heartbreak
2. I gotta shake you off

3. And I betcha she don't love you like I do, and I betcha she's not giving you all that you need

why use don't in this sentense?

4. You're the only girl that I need, cause you're more beautiful than I have ever seen, I'm gonna take this night, and make it Evergreen.

what does evergreen mean?

FYI, those are from lyrics

Thanks

[Tdol]

1 Making the singer feel unhappy
2 Forget about you, stop having feeelings for you
3 In some regional variations of English, people use the form 'she don't'.
4 Long-lasting

[brennan]

gotcha..
nice explanation