I haven't seen any lore regarding any love interest of his, like we see with Illidan or Malfurion and other characters, but seeing as he is the blood elf leader you would think there would be some mention of his love interests in lore.
I just assumed he might be gay given that consideration.
Blizzard doesn't write any gay characters into their Warcraft lore that we know of yet right? I know there was some talk of gay characters in Overwatch, but nothing that I know of in Warcraft