The gf thing is tricky, I had one who was the same as yours, same viewpoints. I think the truth is that you should be willing to compromise how much you play, but the only reason you have this problem is because you live together.

Since you are living together, the time when you are with each other and not are blurred. I think compromising is good, but you should also let her know this, because I think its important to have it clear when you are hanging out and when you are not.