Does anyone know any good images/stories/etc. exploring the topic of relationship amnesia, where one or both partners in a relationship lose their memories of the relationship (and possibly undergo other changes) and can't be together anymore?

I'm a huge fan of this theme, and it's hard to find images along these lines.

Who needs images, when you have a whole ass game to play?! Aboleth, might I recommend 13 Sentinels: Aegis Rim.

The new Matrix movie is exactly this between Neo and Trinity.

There's tons of stories about this by a few writers on mcstories.com aka EMCSA.
I forget which authors, but the stories shouldn't be too hard to find if you sift through the site a bit.

Fire Emblem 4: Genology of the Holy War has some of that... (Though there's a few more... metoric reasons why the pairing I'm talking about can't be together.)

Yeah I had considered this when I read the title but honestly, there's waaaaaay more going on there than simple amnesia so I didn't bother to mention it.

This story has Alot of that

exhentai.org/g/1515779/fbdc2ea2ce/

How convenient, this story got posted today.
mcstories.com/DancingGirl/index.html

The end is right up your alley.

Hey AbolethLasher love your stuff on Mcstories and The Changing Mirror. 2 Stories pop out to me mcstories.com/DoorwayFlemTheRaven/index.html and mcstories.com/HowKaraLearned/HowKaraLearned.html.

But in general this website does a good job adding extra tags to mcstories. There is even a Relationship Amnesia tag. www.gregariousfrog.com/svengali/svengali.html (Once your on the page click the binoculars at the top right, and it will bring up a list of tags)

There's an entire page on TV Tropes about this:

tvtropes.org/pmwiki/pmwiki.php/Main/AmnesiacLover

@hypnoahegao, your link didn't work for me, but with some Googling, is the story "[Harumachi Tsurara (Shichoson)] Juuniji no Mahoutsukai | Wizard after Twelve o'clock [English] [Digital]" ?

@bullet Thanks for the recommendation! The story was definitely up my alley.

@hypnowatcher Glad to hear you enjoy my stuff! Haven't had a chance to read the two stories you linked yet, but thank you for the recommendations. The Svengali tool is particularly helpful.

@Hawkeye Thanks for the recommendation - I'll see if any of the media there do it the way I like it. Unfortunately, I think a lot of mainstream relationship amnesia isn't likely to hit all the buttons quite the way I like it.

Oh
At first it made me think of a hypnotist making a person revolt/rebel against them, with anger/hatred and stuff made up by hypnosis, all that to eventually be broken to see how the person react out of this "play".
Whether the "person" got hypnotized/brainwashed/seduced before can vary, it just add more scenarios.
Can be risky if executed wrong, but I feel like it could be interesting once in a while.