This sounds like Hachiman Hikigaya of Yahari ore....etc. And I don't know what the other quote is from.
Then it has to be Le Morte d'Arthur by Mallory. At least that's the only other really old famous Arthurian legend that I can think of.
It's one of those major old works that I haven't gotten around to. Like I just started reading Journey to the West (translated of course). The Poetic Edda is also to read among other old works.
And this isn't a poem/poet I'm familiar with I dont think. My poetry knowledge is limited to one's I read due to English classes and a few poets I particularly like.
Ooh I've read the Lady of Shalott before too. I'm about to go to bed anyway so night. I'll be back to posting soonish