So My Girlfriend and I have been going out for a while now like over 4 months maybe, but sometimes I have a feeling she plays hard to get with me. I want to address the subject to her but I don't know If she will give me a straight up answer that she is or isn't playing hard to get with me. Will she lie to me that she is playing hard to get with me? And why is she still doing this?
She might be doing it and not even know it. You can ask the question - it is not offensive or sensitive in any way. Chances are that she's just not sure about the relationship and how commited she wants to be so she's inadvertently keeping herself slightly out of reach.
The reason why she may be doing this is because she just could be used to doing it so much that she still does or maybe she might just think you like it when she does it.