I made a big mistake.?

I told my friend, let's call her Riley. I told Riley that I liked one of our guy friends. We all hang out. Let's call him Thomas, and the other one Hock. She freaked out and I didn't know what to do so I just cried. I mean I like him but it would ruin everything, our whole friendship. She told me I should tell the whole group and I said no. She told me I should just let him go, because if we broke up in the future nothing would ever be the same, but I want to take the risk, I mean I just can't stop liking him, and just stay friends. I'm too scared to tell him, I'm afraid he's going to freak out on me, but the thing is she tried to hook her other friend up with him last year. So I'm confused. I have mix emotions, like one minute I don't like him anymore, and then the next I like him. I think I have mood swings.