Honestly, I'm not sure...

I know he kissed a guy for a TV show [Picture below]

But then I looked on this website and there are pics there of Zach hangin on the beach with his "BF"
http://www.mostbeautifulman.com/news/?p=3843#more-3843

So I really have no idea. If he is gay, he hasn't openly come out with it and told the world. But I wouldn't believe any of the rumors that he's gay unless he says it HIMSELF :]

Well if u really love Zacharay Quinto, it shouldnt be such an issue... and i dont see wats there to "freak" out, If he is, then he is. Of hes not, then hes not. No big deal.

I didnt anwer your question cuz honestly i dont thig there will be an answer until He publically addresses it... whether to deny it or come out.

I hope so looolz.

I'm not exactly sure.
I personally don't think he is, because he has had girlfriends. He may just be metrosexual; which makes him ever more hot.
But even if he is, it's fine, cause he's a very talented actor, and shouldn't be judged because of his sexual status.

I don't think so. He does have that Pittsburg accent that makes his voice sound a lil bit gayish. But he is such a flirt around girls and stuff so I don't think so. He's a great actor though, and just because he kissed a guy In a tv show doesn't mean he's gay. He prolly got paid a ton for that. So don't worry. If he is we can cry together. Lol,jk.

He keeps his sexual statis private so I honestly don't know and It's none of my buisiness really. He is an excallent actor and a fricken hottie!
So if he is than great for him, still love him! :)

Oh and I wouldn't think any different of him if he is gay, I would be totally happy for him! :)