18 Life Lessons Learned on Gossip Girl that are Total Lies

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2. Best friends are forever.

The CW

I love a good gal pal as much as the next girl does, but there's a certain point when you need to recognize a toxic friend for what they are and cut them off. Serena and Blair, being the ~iconic~ best friend duo that they are, went through thick and thin together (I'm talking drug busts and sex scandals thick and thin). And I remember naively thinking that they were perfect for each other — but looking back now, their hair color wasn't the only difference between these two. S and B's on-again, off-again friendship brought nothing but negativity to their already turbulent day-to-day lives.

The real lesson: Sometimes you have to be a little selfish when it comes to living your best life. If somebody doesn't want to be in it, then they shouldn't be.