I think it's important to remember that learning Pick up doesn't mean you have to become a complete arsehole.
It's being weak, bending over backwards for a girl and generally being needy that puts them off. You end up putting girls on a pedestal and clinging on to them because you lack choice and abundance.
I'm a total sweetheart when I'm in a relationship, but it's important to maintain a balance, a girl recently told me this, and I quote: "You're really sweet but so manly, thats why I like you so much : )"
So if you're a nice, pleasant and caring person, that isn't a quality you should be trying to lose. You need to lose the neediness and clinginess that can sometimes develop.
Don't be afraid to sexually escalate for fear of breaking comfort and losing everything you'd built up, that's where friendzoning comes in because you didn't have the balls to go for it in my experience. Girls WILL forgive you for making advances, but they won't forgive you for being a pussy. I have been friend zoned A LOT and I can tell you that it was because I never escalated and by the time I confessed my feelings like the lame AFC I was, the iron had cooled down. Strike while its hot.
As for the advice of "Don't care about someone" I can kind of see where you're coming from. But this doesn't mean you should literally not give a shit about anyone and completely remove empathy from your soul, because I believe that would be detrimental to you as a person. Just don't be that guy that is ALWAYS there for her you know? I used to be that guy because I thought being loving and caring like that would get me the girl, but it doesn't, a gay guy has more chance with a girl than a guy like that.
Be a strong, non-needy, fun guy to be around but you should also be capable of showing tenderness, vulnerability and affection. That's just my opinion on the matter and whilst I lack experience as a PUA, as a nice-guy-in-the-friend-zone I've got years of experience haha
