Everyone looks at the opposite sex.You will never stop a womans eyes. It happens. Its part of nature. Outright flirtatious yes i agree.
But there will always be people she will look at that are better looking then you. There is a balance in it. Picking a good wife+ training her properly will take care of a lot this.
Freaking out will only kill it.
Your wife does it, your mother does it, ur married sister does it too.
But do they ogle at the opposite sex right in front of you, up until they're been noticed by that man? That is what OP is saying.
And that's crossing the line.
But if you don't mind ur wife doing it then it's fine by me too, some men has different standards.
Mine is just above par, that's all.