Does my friend still like me as a friend, or more?

I started hanging out with this guy a few months ago and it was valuable to me. We're quite similar in some ways and I am positive we share a strong bond that has not been addressed. He is a quiet guy and a bit withdrawn, so i understand him not fully talking about it. When we would hang out, we'd talk about certain things on our minds, but never this situation; and also paint, play games, and i would play guitar and sing when i sense he is stressed. Anyways, I realized some cues such as longer eye contact, we've sometimes accidentally grazed hands and feet, a couple maneurisms, and he seemed very comfortable around me. The hardest part was wanting to tell him how i feel but fearing rejection. One night when i was spending time with him, I came across a note in a book that addressed my name, and had a short story about a boy that was sexually curious about other boys etc. I realized this could be my chance so i went for it, by writing back a response to how i felt and i waited for him to reply. The next morning, he came to me and said it was his friend who wrote it, and i didn't buy that at all. Later on in the day i asked him what his perspective was on the situation and he hostily said "I'm straight!". I had a feeling he was holding back something. I told him i don't want to jeopardize our friendship, and he said i didn't. But since then he doesn't talk to me, and makes excuses not to hang out with me. I know this could obviously mean that he really doesn't want to talk to me anymore, but to me this is far from resolved. I'm giving him some space right now, but what should i do?