Actually Wes, I think it does say it somewhere that you can date. Just don't remember where I read that. You are not cheating on your W, she's your ex and you have the right to enjoy your life.
Now I'm not saying to go out w/this girl and jump in bed w/her tonight. Since she's new in town, show her the sights and where's the best places to meet people. Keep it easygoing and no expectations.
And don't worry about the ex finding out. You were introduced by your ex-SIL right? She probably already knows.
