Two boys, one choice. Which one?

I have a boyfriend. He is really sweet and cares a lot about me. He would take a bullet for me. He is cute and I really like him. We have been friends for five years. We talk every night on the phone, and I can tell he won't ever let anything happen to me.But then there's another guy. I met him three years ago. He is really cute, and funny. He is like a really good friend. I get to see him once every two years due to him living elsewhere, which isn't fair. I instantly liked him when I met him, and still do. For a while I thought that we were meant to be. We just clicked. And we have kept in touch. But when I started dating my boyfriend, we kinda lost touch. And I have been happy knowing that I don't have to worry about the two guys in my life. In a way, I hoped he had forgotten about me. But now, he just e-mailed me something that he's never e-mailed to me before. It was a chain letter and he only sends those to people he cares deeply about. And when I read it, I cried. I knew he cared. But I also know that I have a choice to make. My boyfriend can see us together forever, and so can I. But I can also see the same with the other guy. It is so hard!!! Please help me!!!