Legolas doesn't have a canonical love interest in J.R.R. Tolkien's books, but in Peter Jackson's The Hobbit films, he develops feelings for the non-canon elf-maiden Tauriel, though she ultimately falls for the dwarf Kili, leading to an unrequited romance for Legolas.
After all he is one of the younger elves in Middle-earth. The Hobbit movies show him having an attachment to Tauriel, though she ultimately falls in love with Kili.
Later, Tauriel is recognized as a talented warrior and therefore leader of the Mirkwood border guards. Legolas, the son of Mirkwood's Elven king Thranduil, is attracted to her, but she does not believe herself worthy of him as a Silvian Elf.
Legolas never marries. The closest he gets is spending the rest of his life, as far as we know, with Gimli; they travel around Middle Earth for decades together, and eventually Gimli is given special dispensation to travel to the Undying Lands with his "friend" Legolas—the only dwarf ever to do so.
He mentions then that Legolas, his son, has grown fond of her but that she should not give him hope where there is none, because Thranduil would not allow his son to pledge to her being she is a "lowly" Silvan elf.
The movie the Battle of Five Armies expanded on Tolkien's canon by saying that the white gems Thranduil wanted back from the dwarves were originally intended for her, but that she was captured and taken and tortured to death by Gundabad orcs before the order was completed.
Tauriel went off to look for the dwarf Kili, attempting to save him. However, during the battle, she witnesses Kíli's death at the hands of Bolg. After the battle, she confesses her love over Kíli's body. It is unknown what happens to her after this.
Tolkien describes Aragorn and Arwen's courtship in starkly different terms than Jackson's trilogy. In the books, Aragorn's love for the Evenstar is discovered by her father who tells the young Numenorian that consent for the marriage will only be granted if he regains the throne of both Gondor and Arnor.
He was the husband of Somniara, and the father of the Elven prince of Mirkwood, Legolas, who was a member of the Fellowship of the Ring. After the end of the War, Thranduil remarried to another elf named Anarel. A year after their union, Thranduil fell pregnant and soon gave birth to a daughter.
In the late First Age, Finrod and Galadriel came to Doriath as guests of Thingol. There, Celeborn and Galadriel met, fell in love, and were soon betrothed. Galadriel remained in Doriath with Celeborn after Finrod went to the Caverns of Narog to establish the stronghold of Nargothrond.
She was the granddaughter of Galadriel and Celeborn and often called Arwen Undómiel or "Evenstar". Through Aragorn, Arwen was the adoptive sister-in-law of Legolas Greenleaf and the paternal adoptive aunt of their children: Anna, Nessa, Thaulius, and Nellriel Telcontar.
That said, no, they weren't ever in love. They couldn't be. Galadriel is married to Celeborn . Gandalf is an immortal holy spirit sent by the Gods as a messenger for a very specific purpose.
Orlando Bloom is visually attractive, and he has outstanding acting and fighting skills. There is something about Legolas that makes him different from humans and makes him look like a representative of another civilization. Yes, this is a great embodiment of an elf.
Gimli loves Galadriel - he later describes her as the most beautiful woman in the world - but they are not *in* love, and I'd say it's a compliment much like calling your lord the strongest or wisest person in the world - beauty is her primary attribute, and so he's praising it.
Sauron does not love Galadriel. He covets her. He covets her power. He cannot love.
After the demise of Sauron, Éowyn and Faramir marry and settle in Ithilien, of which Faramir is made the ruling Prince by Aragorn.
The reason why Eldarion and his sisters (the children of Aragorn and Arwen) were born mortal was because Arwen chose mortality and therefore that fate was passed on to the rest of their line.
2509 Celebrian, wife of Elrond, journeys to Lorien to visit Galadriel, her mother; but she is taken by Orcs in the passes of the mountains. She is rescued by Elrond and his sons, but after fear and torment she is no longer willing to remain in Middle-earth, and she departs to the Grey Havens and sails over Sea.
In-universe names
Mithrandir among the Elves, Tharkûn to the Dwarves, Olórin I was in my youth in the West that is forgotten, in the South Incánus, in the North Gandalf; to the East I go not."
Why did Fili and Kili have to die? There are a few different theories as to why Tolkien had Fili and Kili die at the end of The Hobbit. One theory is that he was emphasizing the important and loyal role that Fili and Kili had as sister-sons of Thorin, an important relationship in medieval literature.
Bofur fought in and survived the Battle of Five Armies. He was given his share of the treasure by Dáin Ironfoot, Thorin's cousin and now king under the mountain after Thorin's death, and made his home in Erebor along with Bifur and Bombur and the other survivors of the Battle.
Thorin had been mortally wounded on the field, and his nephews Fíli and Kíli died defending him as he lay on the ground with shield and body. Thorin died soon after the battle, after he had met Bilbo one last time and had taken back the harsh words he had spoken before.