how to break up

I've never broken up with anyone before and this is the one break up where I feel like I'm the one who has to do it.  My heart is completely Shattered. I told him I loved him and he didn't say it back. It's gone downhill from there. Nothing is the same. He doesn't even text me throughout the day anymore. I've been thinking about breaking up for a month now but I can't find the courage or words to do it. It's a year and two months. This was the man who changed my world, who makes me feel alive, who I gave everything to and now I feel broken and so depressed. I'm weak and feel so stupid for trusting him with my deepest, darkest secrets. I don't know how to let him go. So I want break up stories. What did you say? Or what did he say?