Has she gained a bunch of weight and now is self-conscious about her body and doesn't want you to see her naked? If that is not the case then the next thing that pops up in my mind is she is getting is from someone else. She likes having you around as the provider but now may be finding sex with someone else more interesting. Not going to get better unless you have a talk with her and really find out what is going on.

Im bad with relationship advice because of being fucked over a few times. BUT if I was you with my experience I would go straight with her and if she gives you shit move on. There really is a lot of girls out there and life is way too short to chase something that wont chase you back. Love hurts but honestly, have you ever loved any of your ex's? Do you still love them? Have you checked your E2 levels lately?

Sorry you’re dealing with this.

I’m also sorry to say that if you can’t talk to her about this, then you don’t have much of a serious relationship. I’ve been married over 25 years and the key is honest communication. I don’t know what’s going on with her, but there is something significantly wrong and it will tear you apart permantly if not properly addressed soon.
My advice would be to lay it out and be honest. If she’s not willing to meet you half way, then it needs to end. I’m hoping for the best for you, but be prepared for the worst. You deserve a solid relationship, so don’t settle for less. Best of luck.

If she won’t give that shit up then leave. Most of the time if your woman doesn’t want to have sex there is a problem. Either she has lost interest in you and is getting it somewhere else or there is some other issue that needs to be addressed. At a minimum she should want to suck you off or something. Most women want to keep their man happy so even if they don’t feel like having sex they would still want to make you feel good.

Does she love you as much as you love her? If so then maybe lay off her a little bit. Have you been making a big issue of it? My wife and I have gone through times where we haven't done anything in a while but it was because something else was going on as in an external stressor. If the love isn't there from her then it may be time to move on. The worst thing you can do for yourself is to stay in a relationship where there's nothing there and the longer you do the harder it will be.

I think no sex is a red flag there is something wrong in the relationship

This is always our first suspicion as men, but it’s not always true. First of all, don’t assume the worse. This can also be a red flag that she is having troubles within her own self & maybe she’s too insecure or even in denial that she’s having problems. You say you love her & that puts this circumstance in a different perspective brother. If you love her don’t emphasize the lack of sex, but rather put the emphasis on the fact that you feel something is wrong & you love her & you want to help her!!! You can tell her to hit he door as suggested, but what if she’s the one? Just my 2 cents

It is not normal. I would lay it on the line, if she isn't down time to move on. Nine months? Try twenty years of that bro..

I would be suspicious of her behavior. My mind would leave me to believe shes getting it somewhere else. I would first have a sit-down and discuss what's going on and try to figure out a solution. Or how to fix it. If nothing changes then she doesn't care or she's getting it from somewhere else. So then I would tell her to take a hike

Tell her don't let the door hit her ass on the way out! Find a better woman. Like today