Most probably this is already well-known, but…

darkslover:

Kaworu is the only character ever to be officially described as a love interest for Shinji.

Nagisa Kaworu The fifth Eva pilot whom Seele sent in. To Shinji, he was both the very first friend he could confide in as well as a same-sex romantic interest. On the account of his true nature as an “Angel”, he attempts to merge with the First Angel, Adam, ensconced in Nerv’s underground, to trigger Third Impact. Driven at the far end of his anguish, Shinji kills that beloved friend of his with Eva Unit-01.

同性愛的な恋愛対象 = homosexual/same sex romantic love interest

Bless you, /a/.

EDIT: Source