Sad N Confused

My spouse and I split up just over a month ago and it hasn't gotten easier. He says that he loves me and wants to be together but needs to work on himself before there can be an us. There are things he wants to change and thinks the only way for that to happen is to do it apart. Our relationship wasn't perfect and neither am I but this is tearing me apart. He tells me to have hope that we will be together. I want to believe that but he has broken my heart. It tears me apart that when I want to see him or talk to him he's not there. I truly believe everything he says to me but it just won't sink in. I wish there was another way. I hurt so much and he could take it all away. Why would he chose not too.....how am I suppose to believe that one day, who knows when, but one day we will be together......