Going through PPD I found this:

https://www.reddit.com/r/PurplePillDebate/comments/7h33um/cmv_friendship_is_not_the_ideal_basis_for/?st=jawfnch0&sh=420b9edc

The whole post and comment section orbit around a simple concept:

Affection with no sex = friendship

Sex with no affection = fuck buddies

Affection AND sex = lovers, a couple

Isn't this... really obvious? I don't know, I just thought this was way too basic information to even have a debate over wether it was true or not. Yes, it's true. The end.