I'll give you some advice which WILL help you and anyone else in this position and it comes from 30 years of experience with women.
Except what 'is" and not some much about what you might "lose". You are too concerned about messing up with this women. If you try and show FAKE indifference she will pick up on this and hurt your game. Women know when you are being authentic... trust me... when it comes to reading emotions and guaging the interst of a man, they are experts. No man is a good enough actor to overcome this.
Indifference can not be taught... and indifference ONLY works when you REALLY are indifferent. The only way to REALLY be indifferent is to accept the situation for what it is and be willing to own whatever happens.
This is not something you can learn reading PUA books and BS like that. I laugh at that stuff all the time... guys who fake indifference and have success from this are dealing with woment that are already attracted to them... Isn't that funny... I mean it REALLY is funny. If a women likes you and wants you, and you ACT indifferent (rather than actually being indifferent)... she knows it's a game and is just playing along. Did all you DJs read that... Accept this as a fact.
Same is true for confidence, and control. You can't fake confidence, and you can not fake self-control. You have to really be confident and really in control of yourself. Try and fake this stuff and women see right through it. I think it is important to know that these are the things that women want.. but not so that you can fake it, but so that you can learn to develop these traits in yourself.
Okay... my advice to Channingtatum... She is going out with you, so she is interested. Good. Accept this for what it is, could go either way right? You have to keep telling yourself the following OVER AND OVER again until you believe this, damn-it you have to REALLY believe this:
I want this women and if I get her GREAT, but if I don't get her then well I have my life and what ever happens is meant to be.
IGNORE all the PUA BS stupidity. The truth is that 85% of your game is YOU. Get in the best shape possible, look the best that you can, find a purpose and things that interest you and stick to that path like grim death. Finish what you start... learn how to do stuff... keep learning and improving. Why? Not to get chicks, but to make YOUR life better. When you have a great life, women will want to be part of it. The other 15% is just understanding what women want and be willing to give it to them as long as it doesn't take you off your path.