Re: Practice girlfriend
You're playing a very dangerous game my friend. Never a good idea to play with ones emotions as such. Although I do understand your reasoning for experimentation.
Honestly I think you should end it as soon as possible. You don't really learn much until you meet a woman that you actually do have feelings for. That way you learn what to do EVEN if your consumed with emotions.
Doing those things could possibly get her to break up with you. However, if she has a low self esteem she may just let you treat her like dirt, which is not good obviously. So it may backfire and you end up with a stalker. Never fun.
As long as you are sympathetic to a degree, you should be fine simply telling her that you want different things and want to explore your options.
"All things are subject to interpretation. Whichever interpretation prevails at a given time is a function of power and not truth."