I came in here thinking that OP was saying the woman was jealous and insecure only to find out that he a jealous and insecure punk

no offense OP but to me, being jealous and insecure are feminine traits so you need to control that.
To answer your question tho... I've always thought about it like this. One of my favorite quotes about relationships comes from the first X-men movie, when Wolverine asks Scott, "Are you gonna tell me to stay away from your girl?"
And Scott answers, "If I had to tell you that, she wouldn't be my girl."
That's how I approach any woman I have dealings with. If she gives it up to another man, I have enough confidence and arrogance and swagger that I would pretty much dare her to do it... cause the second she does, I would ditch her so quick it would make her head spin.
And I always have some bad hoes waiting in the wings for their chance, like "put me in coach."
If wifey were to leave me right now, sure I'd be sad... for like one day. Then I would hit the

and move on to one of the many chics that's throwing it at me constantly.
I wouldn't be single for long.
All men should have this attitude.
Know your worth, king!