Re: She called me out. What now!?
First of all, only post your threads ONCE. There's nothing more annoying than three of the same posts in quick succession.
Okay, now on to the helpful stuff:
You need to build comfort with her. The only way that she is going to feel played is if you haven't built up enough comfort. Sure, she is going to be jealous about that girl from London. That's not necessarily a bad thing. By her being jealous, she's becoming more emotionally invested with you. Just don't play it up.
You're playing with fire here. jealousy is good in small amounts, but overuse can lead to you being burnt. Don't mention the girl from London again. If she brings it up, be truthful with her. Yeah, you had a thing. It's over now. When you're with the new girl, be 100% there. She'll notice if you're not paying attention, if you're texting or if you're 'subtly' checking out the hot chick adjacent to you. This will only lead to her feeling cheap.
Basically, just be smart. Don't try to make her jealous, REALLY get to know her and pay attention when she opens up to you. Good Luck.
PS: If you ever post the same topic three times in a row... I will look for you. I will find you. And I will go Liam Neeson on yo ass.
If you walk in knowing that you're THE MAN, then you've already won the game.