I can't add much more than all the other 5 star reviews but this show will resonate with so many people.
All the characters are just real and relatable. All three main characters are deep and crazy in different ways. I laughed out loud many times, squirmed at others and sobbed as well but despite the sad ending it left me with a sense of peace as it most definitely made you really think and recognise what should be important in life. I will re-watch this as I'm sure I missed bits as it is utterly packed with so much and flips time lines.