run, you ask;
Why are women so jealous of other women and feel so threatened ???????
Because men think like this?
As one guy at work said "its a no brainer", she is very attractive and very nice and personable, my wifes looks are fading, as are mine, so i thought, i seem to have more opportunites in my late thirties, then i had during my teens and twenties put together, go figure, so guys there is always hope.
Don't get me wrong. My 'position' is that we are primates, and behave like them. You are a male; just as a woman will find characteristic signs of 'fitness' in a male attractive, so to will a man, and men's criterum for fitness have a lot to do with young fresh bodies. If you're not happy at home, then your instincts will have little else to occupy themselves with.
I got married to a woman 9 1/2 years older than me, that lasted 5 1/2 years, I then went to University, went out with women as much as 12 years-younger than me, and now live very very happily and hopefully permenantly with a woman 7 years younger than me.
Bodywise I'd have to be lucky to be better off, as my girlfriend is a very youthful peachfuzzdreambox. But that doesn't mean that a fresh crop of University students doesn't make my mouth water. I'm programmed that way; I'm just sentient and choose to do nothing about it.
But I'm happy in my relationship. And I also know that a younger woman would (sorry younger women for this generalisation) not be as much fun intellectually speaking. They will be, but maturity and depth don't come in bottles. They come in time. I also know that, having my fair share of bastardosity, I need to be with someone who is my match, not someone I can walk over, and in a relationship where one is unavoidably a peer one can often walk all over the younger partner if one so wishes (or if one doesn't have any self-control).
Are you happy? Do you still love her? Does she know how you feel? Or have you avoided discusing it as she's suspicious already?
Put the ball in her court. Ask her if she is happy. Ask her if she still loves you. See if there is anything there that can be resusitated without flushing away the years you were together. Talk to her about what you feel, about how sex isn;t what it was and how you'd hoped for more when you'd started seeing her and still hope your vision was true.
As she is not being an utter bitch, but is merely (and with reason - you are thinking about it and women know guy's eyes are wandering often before they do... if you were still hot for her you'd get home sooner, after all) jealous and suspicious, you owe it to your own self to see if it can still work.
If not, you will be like so many men who trade in fir 'this years model' when the car doesn't smell new anymore.
If it ever was worth anything, it probably still is. If after you've tried you are both still unhappy (as she sounds as bored with the realstionship as you do), then bail-out with good conscience and honesty. If you're sure it's over there's no harm having fun, but don't lie about it.