Does he have the right to blame me?

So my boyfriend and I dated for two years, but I went through some major life changes and I felt like I wasn't in love with the person he was anymore. So naturally I broke it off. We where both very serious with each other, talking about marriage, so it was a very very difficult thing for me to do, but I thought it through very hard and I knew it would be difficult. When I broke it off, he tried to kill himself via overdose. I had no idea about this, because when I broke it off I thought it would be best to cut all contact. Since then he is okay now, he survived that attempt and he's better. But I heard from mutual friends that he blames me. He says it's my fault he tried to kill himself, and says I basically gave him a death sentence. I feel horrible about it, but I wasn't trying to hurt him I just wanted to move forward and it wasn't fair to either of us being in a relationship that wasn't going anywhere. I'm not sure what to do, I feel guilty but at the same time I didn't make a decision to hurt him and I don't feel I did anything wrong?