About now. In the past I stuck with it and was married twice believing it would eventually work. AS you get older you realize it is either there or not. The real trick is to believe yourself and not the convenience of it all. And after the break up , if it is real, it will show itself again. No need to believe in something that may not be there

Be prepared for separation even before trying to find out why.

I don't know that I have anything to add to what other commenters have already said advice-wise. Sorry to hear you're going through that.

I hope you're able to figure out the best decision for you both, in the near future.

Perhaps he's ill? Seriously....how long since he's seen a doctor? You don't mention his age but he could have hormone issues or something worse. Just a thought. GOOD LUCK TO YOU!

An abrupt personality change can mean anything from cheating to mental or physical illness. I would have what my grandma would have called a "come to Jesus meeting," meaning a pull-out-all-the-stops confrontation. I wish I had done that before actually catching my husband in the act. By then it was too late.

I'm sorry to have to say this but he has already left mentally, he is just waiting to leave physically ; maybe hoping you will force the issue.

I hung in there too long for the first two long terms...well it seems like it was too long, but I think that we are in it until the time is right for it to end. The 3rd (and last one so far!), I didn't wait so long, once the red flags were popping up all over the place! I have learned to not tolerate being disrespected in any way. After trying to communicate openly about the issues, if they are not willing to own their actions, not willing to work on the issues, it's time to kick em to the curb. Stand your ground, you deserve to be treated with kindness and love and RESPECT.

I guess it might be over but one consideration: Very frequently when people say someone else is not "listening" to them or has stopped communicating with them it simply means the other person disagrees with them. That might be reason to re-examine the relationship or reason to move on...

Nothing last forever. Cliche as it sounds but that's the way it is.

You do not want to wait until you get slapped in the face! When someone stops trying any is liable to happen.

Sit him down and have one more talk to him. Make it as obvious as what you are saying to us here. If he doesn't respond, you know how long you have to take.

In fact, you already know, or you'd not be asking. My real advice here is to make sure your partner KNOWS before you move forward.

Could he be unwell? If it’s a sudden change and not his usual self?

I’d suggest couples therapy, even if just for yourself so you can get good, specific info.

I would never abandone those green eyes! ??
And I will be happy if I got just a little smile in your face.

Sad to say there is a trick some men use to absolve themselves of responsibility in a failing relationship, which is simply to become such a pain in the arse that the other partner leaves or throws them out, making him the innocent victim of a heartless and unreasonable woman.

That sucks, I'm sorry. In my experience if communication has died, there is no other path to a successful relationship. If he won't talk about your issues, he already chose to end it.

In my experience dragging out a bad relationship is worse then ending it but it's your decision in the end

First off, really sorry that you're going through this. The end of a relationship
is always difficult.
And yes, I said "the end of a relationship".

Based on what you said (and I believe you, I think you're pretty level-headed, and not a drama queen, who makes up shit just to have something going on), he no longer communicates, you've tried talking to him, it's been going on for months,
it's over.
I don't believe in ultimatums. To me, giving someone an ultimatum is equivalent to emotional blackmail, and it hardly ever works. In most cases, even if the other person acquiesces, it's only temporary, and you're right back to where you were in fairly short order.
He's made his position clear. If he were interested in making the relationship work, he wouldn't be behaving as he is.

Make your own plans. Do not include him in those plans. Begin the execution of
your plans as quickly as possible.
If he's in your house, boot his ass out, with no remorse. No discussion, and no possibility of making you change your mind. Have people present for your own protection.
If you're in his house, make arrangements to move you and yours into another domicile as soon as financially feasible.
If you are both on a lease, find out what your legal obligations are. Take the necessary steps to extricate yourself.

Do not tell him your plans. He has no right to know what you're planning.
If you think there is any danger of violence, be prepared to file for a restraining order, and go FASTER.

I know there are some who will think that I am unnecessarily going straight to
Def-con 5, but I've been through this. I've seen this play out in multiple scenarios for myself, and others.
The ONLY thing that matters is protecting yourself, and any children who may be
effected. His feelings are irrelevant now. He has shown you that he no longer cares about the relationship, therefore, he no longer cares about about your feelings. I'm not saying to be ugly, vindictive, or confrontational in any way.
Actually, that is to be avoided as much as possible.

Don't make excuses for him. He's a grown-ass adult. If he doesn't know how to conduct himself within the context of a relationship, it's not your job to hang out and teach him. He may never learn, and you've got more important things to do.
Good luck going forward. I'm here for you if you need moral support.

You would love my collection if arrowheads and stone tools i have found scouring the riverbanks and such

I'm sorry you are going through this. =[

A number of people have mentioned pregnancy in this comment thread but I see nothing in your post to suggest that. If he has had such a major attitude shift in a relatively short period of time my guess is that something is wrong (yeah, I know, stating the obvious). If you have tried to pin him down on what's bothering him or what "issues" he may have in the relationship in the spirit of trying to fix things and he is not responding to you, it could be he has already checked out.

If that's the case you may not be able to change it, and probably shouldn't want to. Why fight for someone who doesn't want to be with you? If he really is done, it would be nice for you to at least know what his deal is.

i would address him and say either we sit down and talk now or I will be leaving soon.If he isn't ready to talk the time to leave is now.

The 7 year itch is a real thing. It's the point in the relationship when your partner feels trapped, that he is missing out on things he'd be able to pursue if not for you, and his resentment grows each day. Sometimes it blows over, and your relationship recovers to be stronger than ever. When is it beyond salvaging? When you find yourself unable to swallow any more of his crap. Everyone has a different point of no return. Taking the step to separate yourself from the drama isn't easy, especially if there are children involved, but the old saying here applies, if you think you have a problem, you probably do. That's all I got. See a counselor by yourself, if he won't join you. My ex decided to move out just about 10 years ago, after 28 years of marriage. I let her go without a fight, best move I've ever made. Good luck, DNB.

I spent 31 years in a marriage that was broken at 27 years. Sounds like he may have found someone else. As someone else said if you still love him try to get him to talk. If not, my advice is not to waste much more time and move on. Time and life fly by..

What significant changes have occurred in your life, his life and your shared life in the past few months? This could give you a clue as to what has happened that has caused this change in your relationship, rarely does change occur in a vacuum so look at yourself as well as him, then maybe you can sort things out with him. It sounds like it needs to be addressed and the sooner the better.

A few months doesn't seem long compared to almost 6 years of good. I would find a nice quiet relaxed time to try to get to the bottom of it. And, perhaps acknowledge that he might not be ready to talk, but ask that he does soon.