#osse hung up with elves because many water maiar just did not like him

[adoseoftrees]

There were many Valarin songs about Uinen and Osse.

No. Aule did not plead her to save Osse. He would ask no one to do that. It was just an ordinary day, when he walked to the seashore and looked east, still grieving the ones left with Melkor. A Maia of water approached him, and they talked.

There were whispers, about the conversation between Uinen and Aule, how she left her friends and family in secret, her long journey into Utumno with every wave trying to push her back, how she offered her service to Morgoth, the dreadful acts she committed as the unwavering deadly sea, and the time when everyone believed she was lost like many others were.

Melkor remade her the same way he remade Osse and other Maiar that submitted themselves to his will. She let him to reshape her into the chains that kept Osse in line. 

Uinen was gentle, quiet, and she kept secrets. She was a good actor, or she wasn’t acting at all. Melkor did have trouble differentiate anger and fear. And Melkor never fully understood to what extent one can do for the other; he expected Uinen to serve him for Osse, but he did not expect Osse to betray him for Uinen. After all, Osse sang with him in the Song.

Uinen eventually stirred up a small-scale rebel. She did not come to Utumno for Osse only. She gathered a small group of Maiar that did not want to serve Melkor any longer, and ran for the ocean when Melkor was away. Osse followed her.

It turned into a bloody, desperate fight. They very likely melted some ice and left a small part of Utumno temporally flooded. They knew no one would come for them; Osse created that mass extinction, and Uinen had her share of atrocities when she was undercover as well. Melkor made sure that everyone served him became traitors unredeemable.

Eventually they were cornered and Melkor came to get them himself. They were not prepared for the fate they would suffer; no Ainu could possibly prepare themselves for the horror Melkor would do. Both of them considered shredding the other to spare them from being made into some mindless beast. 

Then the land split open beneath them, and the sea flood into the crack and swept them away.

They were expected to be jailed or exiled, but both Aule and Ulmo pleaded for them. Yavanna did too; she was not entirely happy with the mass extinctions, but she was happy to have a few of her former Maiar leaving Melkor and contacting her again. (They refused to come back, but they were now doing fine and making things on some remote islands.)

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Uinen was swiftly accepted back into Ainur community. She was always loved by everyone before she left, and her friends were too happy to find out she was on the good side all the time. 

However, nobody knew what to do with Osse. The fucker really only came back for love; people remembered him happily singing with Melkor & committing atrocities.

Only an Ainu could fully understand what Uinen sacrificed for Osse. The things Melkor did to a Maia was permanent; she was never the same again. Not all her friends and family considered her sacrifice to worth the outcome, and they definitely blame it on her horrible awful boyfriend that made evil life choice. 

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So yeah, the tale of Osse and Uinen was considered a great love epic among Ainur. But the story was very controversial and there were different versions written by multiple parties.

Ainur sang about them the same way Noldor sang about Fingon & Maedhros and Sindar sang about Beren & Luthien in later ages.

The universally accepted idea was “What Uinen did was crazily heroic but the mess was all preventable if someone (pointedly looking at Osse) could make wiser decision about who to follow in the Song.”