Carmen has no shame in her game. She lies to herself and others about her promiscuity and prostitution because she is living a luxurious lifestyle.

The relationship started out well. However, soon the ex-boyfriend was getting in to trouble (money, drugs, etc).
Since Lana cared for her man so much, she stood by him throughout the whole ordeal. It’s possible that this is one of the other causes of her heartbreak; as she invested so much trust and emotion in him, but still ended up getting hurt.

However, this time, he never came back.
This was obviously unexpected and traumatic for Lana, and the lack of closure could be one of the main causes of heartbreak.

Being able to tie a cherry stem into a knot is a sign that one is a good kisser/is able to work their tongue well

Notice the wordplay…instead of GIVING party favors which is what hosts usually do, Carmen is DOING party favors which may imply she is performing sexual acts with guests of the party (most likely for money)

The main character of the song is a young prostitute who sells her body so she can lead an expensive lifestyle

According to Del Rey the relationship was really smooth at first, both members were clean and sober and were living together. Then, apparently he started to get into trouble and had to leave.

The song is about an ex who was described as a James Dean look-a-like

Goes back to the Karl Marx idea that eventually the bourgeoisie will be overrun by the proletariat

In a strange paradoxical way the bourgeoisie needs the proletariat because without them to work nothing would be done, so they become this little annoying thing that is constantly there to remind them they are not all powerful.

This line doesn’t necessarily mean that the working class should quit or become self employed, but rather any work they do should be for the benefit of themselves