Yeah man, I'm in the game to get my 1st kiss, get a girlfriend, become extremely confident in myself, improve my lifestyle, have many female friends...alot of things man. I've kind of hung around a shitty circle of friends my entire life and I wanna change it by just getting new ones and creating a better life for myself

I've been in the game for about 4 years but only starting to fully learn and appreciate what PUA's are teaching today and applying it to myself, its going great. I've only approached twice and gone on one date since (no kiss or gf). I've learnt so much already and I've got a busy day tomorrow approaching and destroying my AA (I only fly solo for now).
What you got from that girl you met on mxit, is what is called LMR (Last Minute Resistance). The reason she didn't want to kiss you is because you didn't build up enough attraction with her on the date and for that she wouldn't give you the kiss you wanted. It wasn't her it was you for not escalating and building attractive qualities allowing her to invest in you man. Sorry if thats a little harsh but thats the bottom line. Also, the thing about popular girls is that if she all good to go for you kissing her, she might have been high maintenance. Meaning, that if you dont have an Alpha Male or dominant quality about yourself and display that to others around you she might perceive you as weak and she will have 2nd thoughts and leave you for some bigger or Alpha type gent who can protect or just give off a vibe like you are completely comfortable in her presence. Popular girls want guys with the same qualities as them or at least close to them. Like popular girls have confidence, flare, superiority, status, style, charisma etc...if you can incorporate those things into yourself might be able to land another popular girl another day.
Just my thoughts.