help please- love advice needed

My boyfriend and I of 2.5 years just graduated high school. We broke up because we had been feeling like we had lost our spark. We had already broken up a few times before but had always gotten back together because we always said that we either had to be in a relationship or not talking at all for us to work because of how close we were. And he chose not talking at all. It's fucking killing me. It's only been 5 days and I was doing fine until one of my friends posted a Snapchat with him and now I'm a mess again. Please help. How do I deal and how do I get him to at least be friends again.