In love with my best guy (maybe gay) friend!

I have had a massive crush on my best guy friend for about three years now, but a friend of mine told me that he told her he's gay. I'm not sure if that's true or not, though. He hasn't told me anything. My mom thinks I should just man up and ask him, but I'm too afraid. What do you guys think I should do?  
Disclaimer: I'm not against him being gay, I'll support him if he is.

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