Hummmm... I kind of understand your situation because I have some friends who are in MLC and have that fantasy of hooking up with a "bad boy." So... during my divorce I spent a great deal of my summer going out to these places where bikers socialize. Although I know there are plenty of monogomous guys who even have their wives with them, one thing I observed is there are an awful lot of married or like-to-think-they-are-not-married guys who seem to enjoy quite a bit of flirting. I don't know if your husband has this attitude or not. But it seems common in this environment. And when people are drinking, and other people are behaving badly, it can have a negative effect on even the best of people.
So I understand your fears about GALing. However, I do think this is one of those situations where I would be... if you can't beat it join it. Have you ever gone to these places with him? Even if you don't like riding on his bike (heck, I have no desire to ride on the back of any Harley... ever!!! I want comfort and a radio!!!!), but you could still meet him there. Put on some sexy jeans and little skimpy top (like all the other women at these places. The more skin the better) and drive over in your car and join him... or, better yet, go with a group of girlfriends and you do a little flirting too!!! Boy that will get his attention!
I think OW calling to see if you are having sex with your husband indicates she is jealous of you. If she does that again, you need to say, "Of course, I'm married to him. We have sex every night!"
There is no arriving, ever. It is all a continual becoming.