Confused

So recently one of my best guy friends has been showing a little more affection than usual. We have always joked around with eachother but this time is different. We have been hanging out a lot more one on one, and he told me that he has developed feelings for me, the only thing is I have a boyfriend. I really like this guy, and I dont want things to get akward between us, so I just keep hanging out with him as friends of course. As we keep talking and hanging out, he spills a secret about himself, when he is bored, he likes to write poems. He wrote one and got it published on a site, and he showed it to me. I told him how much I liked it, because I happend to love it. After that, he told me he had to write on the site as well what inspired him, and he replied that it was about myself. After all that we have been through, he has always been there for me, he is an amazing guy. I'm a little confused.