As a girl, there are 2 things you should always keep in mind when dating:
1. Every guy is trying to have sex with you. Never doubt this. Sure, they may like you and want to get to know you better, but they are definitely trying to sleep with you.
2. You're the female and have the power. I mean, just read this thread. You'll understand what I mean. Now, this doesn't mean you can control, or change the guy into something he's not, but females have more "power" in a relationship than most realize.
I wouldn't call that being a "player", though. :lol
And honestly, why are you keeping such close tabs on your ex?