Don't want another heartach

There is a guy that I'm trying hard not to like. It's hard cause he's so sweet, funny and kind. He reminds me of another guy that I used to really really like. And that guy gave me the biggest heartach of my life. With this new guy I don't want another heartach, so that is why I'm trying not to like him. I'm scared of what liking him could mean. I'm scared of what liking him could do. Why can't I just be happy being friends? Why does my heart have to get in the way? I don't want things to change completely. But it would be nice if he at least acted like he liked me more than a friend. But he doesn't, and I really don't want to tread the ground of another broken heart.