Lu Sheng from Zegapain, who completely caught both the main character and most of the audience off guard when he openly declared his affection for the main character, Kyo, complete with a hug and a kiss on the cheek.Then again, he might be bisexual, but The Reveal of his unrequited love for the main character of the show is carefully held off until the last few episodes of the show. Gwen Lineford from Turn a Gundam, the first (and so far, only) character in the entire Gundam franchise to have an openly stated attraction to a member of the same sex.
There's also Morinaga, whom rabid homophobe Souichi doesn't realize is gay and in love with him for four years until he finally spills the beans.
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