well you and her are already close...
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she doesn't like going out and stuff ...
1. some people just don't like to go out , they aren't comfortable either when going out.2. she want to be with you without other people around , she is setting up her own excuse to be private with you.
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I want to be more than just good friends, how should I proceed
don't let her knowQuote:
Is inviting her to mine a good idea ?
yeah why not ...... but be sure to have some plausible deniability... you also can invite some friends ( which of course leave early so you 2 can be alone 
)example
Don't be like : '' hey wanna watch a movie tonight at my place ''
my style : '' o my god my brother/ a friend want to watch brokeback-mountain with me but im scared ... maybe i will turn gay ( now look at her reaction, she doesn't want you to turn gay
) that movie is a horror movie for me, i need a girl around while watching it so i keep taking the straight path''you ain't inviting her directly this way ... talk into frame
or .. invite her for a party and when you and her are moving to the place tell her you forgot something and you need to go to your place to pick it up.
don't act dumb ... don't say :
hey you wanna see my place ?
i mean wtf is interesting about that ?
be cocky and fun when asking.......
ok you can like her alot ..... chemistry is cool .... BUT stop having feelings for her
use this mindset :
priority 1 : HAVING FUN
priority 2 : Doing shit
priority 3: having feelings
having feelings will make you expect more of her and you ... it can shut you down , don't have feelings now there is plenty of time for that when you kiss her.
everytime your feelings show up think ; ''hey i don't need this right now i can think of that later.''
keep kino , keep conveying your a sexual person ... and don't reduce yourself to being mr. nice guy - you can make some confronting jokes .. nothing wrong with that. don't forget to run your game ..... getting to emotional will decrease your game.
take her out for a walk.... ask her to watch a movie ( use an opener like i described above ) She will give simple hints she wants to spend time with you BUT she will never ask you , you have to ask her - this is part of a test. or maybe she's just shy .... you can't entirely know what she thinks, maybe she's fucking masturbating while thinking about you SO don't imply shit and don't imply she doesn't wanna date you.
don't be scared to ask things.. you asking all of this shows you not confident enough.. a real confident man knows how to handle this and shouldn't ask on this forum. Get what you want and be relentless , we have room for emotions later on.
go get her ! use your brain instead or your dick and you will be fine - Be yourself