Gut feeling b/f might be biual?

I keep asking him and I always get the same answer, no. Now he gets really defensive about the fact keep asking. We live in the gay capital of our country and he lives on a very gay street. He used to tell me a lot about guys that hit on him and that concerns me as no other straight male I know gets hit on as much as he seems too do. He seems to boast about it and seem flattered. He now going to work as a bouncer outside one gay pub, I questioned him why he want work outside when he gets hit on by gay men and it properly be worse there but he just doesn't mind. The pub is right outside his flat so thats his main reason why. He also confessed to me yesterday really admiring this male celebrity, so much he found out on a show where he lived and drives around looking for it. He also followed his twitter. This celebrity Peter Andre!