Oh, this one is simple:
Either hire a private investigator, or just follow her around in disguise.
If she does something wrong, you catch her, then dump her!
Seriously though, jealousy is a big turn-off. The only POSITIVE thing i can think about jealousy is that you "were thinking of them"....
You have to decide in your head to CHANGE YOUR BEHAVIOR, or to continue worrying about it. It doesn't sound like you're too happy with your jealousy, so that leaves you ONE OPTION:
Change it. Stop it. Do SOMETHING.
Are you going to sit in your house all weekend with alcohol creating mock scenarios in your head of your girl meeting and consequently banging some rich guy?
Dude, that is going to drive you nuts. When left up to it's own devices, your brain will undoubtably think the WORST.
Jealousy is a form of insecurity. What are you insecure about? Are you afraid you aren't good enough for her? She's too good looking for you?
You might want to get to the ROOT of the problem first, which is your insecurity.
Let's say your girl meets some rich guy and dumps you.
GOOD!
Seriously, that is GREAT!
You weeded out a gold-digging bit** who was going to sap your money and run your poor little through the wringer anyways. So, better sooner than later, right?
Oh, and if you haven't figured it out already, DO NOT LET YOUR GIRL KNOW YOU ARE JEALOUS. ESPECIALLY IF YOU ARE STILL FAIRLY EARLY ON IN THE RELATIONSHIP. It's one thing to be jealous if it's your wife of 5 years, cause then you could beat the crap out of her and scare her into not being around other men.
OK, that was a joke.
Dude, you have to do something. Just STOP STOP STOP being jealous. I know that sounds easy, but man, whenever you get a crazy thought that she's cheating on you, replace it with the thought of a dancing banana, or something. Just STOP thinking about it.
"I read an article on sosauve.com that says that a women will be more attracted to you if you let her do what she wants (and not ask any questions). I kind of find that hard to believe. "
OK, well lock her in the basement then.
Doesn't that sound less desirable to her than not controlling her and exposing YOUR insecurities?
You gotta do something dude, cause you are being weak. You gotta know that YOU ARE THE PRIZE, and that if you are keeping this chick happy, then SHE WON'T EVEN THINK OF LEAVING YOU FOR ANOTHER DUDE.
I don't know what else to say. You gotta stop caring, in a way. That is, unless you like feeling like a fool, and drinking yourself to sleep over a chick.