Tsuki Hyouka's Questions (2)

I read this years ago, so my memories are a bit blurry. But it's a shonen-ai (I think?) about a guy head over heels about another guy. The thing is that the other guy is straight and our MC was delusional, literally imagining things in his head. Like the whole story didn't happen for real, and we discover the truth only at the end, when we see MC in a hospital bed. When MC woke up/realized that what he thought wasn't the truth (because I think his crush came to visit him with his wife or smth), he escaped the hospital to drown himself in the sea. That's how the story ends, on a panel with the waves or smth.

And I cannot remember what the name of this was! Please, does anyone know what I'm talking about? Sorry if it's hard to understand, english isn't my first language

I cannot remember nor find this manhwa I read a few chapters from, a while ago. Bear with me, it's pretty blurry in my head. But from what I remember, the FL was married to a guy, and then something happened, like she awoke/helped (or maybe she asked for help) a god or someone very strong at least and then he kinda became her husband during the day. But then she had to go back to her home where her other husband was for the night. Or the other way around, she stayed with him at night and went back home early morning, I don't remember. I think the god might have been a statue or smth and she woke him up by mistake, but I'm not sure if I'm not confusing it with another story.

None of the guys knew the truth, and the god or wtv kinda forced her into this but she wasn't happy with her main husband anyway. From what I remember at least.
It was in a historical setting and the FL had a light hair color and the god or wtv had black hair, I think. And I'm pretty sure it wasn't an isekai.

Help me please!