Emerald chat
If you have no luck for the above three options then why not take a look around your existing group of friends or colleagues, if there is someone there you already fancy then it must be worth trying to get them into gaming - you never know you might introduce a girl to her new favourite hobby!
Remember just because you are a fan of emerald chat gaming does not mean that your next girlfriend has to be as well. It can sometimes be healthy for the two of you to have entirely different hobbies as it gives you the time to spend away from each other and therefore keeps your relationship alive. As long as she does not start to resent you spending more time with your games than you do with her then you should be able to strike up a happy balance, after all I am sure any girl would have hobbies that you were not that into.